Alpha® Vacuum-Brazed Diamond Core Bits deliver unmatched cutting power on granite, porcelain, concrete, marble, engineered stone and more. Vacuum-brazed diamond retention technology provides maximum durability with consistently fast, clean cuts, smooth edges and minimal chipping. Versatile for both wet and dry drilling, these bits are available in 16 sizes from 5/16" through 4", all with a standard 5/8"-11 thread for direct mounting on angle grinders and drill motors.
Features
Unmatched cutting power on granite, porcelain, concrete, marble & engineered stone
Vacuum-brazed diamond retention for superior durability
Fast, clean cuts with smooth edges and minimal chipping
Versatile — wet or dry drilling
Sintered segment with undercut protection for stable drilling
Standard 5/8"-11 thread fits common angle grinders and drill motors
16 diameters from 5/16" to 4"
Part No.
Diameter
Thread
Max RPM
UPC
VBC7008
5/16"
5/8"-11
12,000
749173462726
VBC7010
3/8"
5/8"-11
12,000
749173462733
VBC7013
1/2"
5/8"-11
12,000
749173462740
VBC7019
3/4"
5/8"-11
12,000
749173462757
VBC7022
7/8"
5/8"-11
12,000
749173462764
VBC7125
1"
5/8"-11
12,000
749173462771
VBC7132
1-1/4"
5/8"-11
12,000
749173462788
VBC7135
1-3/8"
5/8"-11
12,000
749173462795
VBC7138
1-1/2"
5/8"-11
12,000
749173462801
VBC7145
1-3/4"
5/8"-11
12,000
749173462818
VBC7250
2"
5/8"-11
12,000
749173462825
VBC7258
2-1/4"
5/8"-11
8,400
749173462832
VBC7260
2-3/8"
5/8"-11
8,400
749173462849
VBC7263
2-1/2"
5/8"-11
8,400
749173462856
VBC7376
3"
5/8"-11
8,400
749173462863
VBC7410
4"
5/8"-11
8,400
749173462870
Select the correct diameter for your hole; thread the bit onto a 5/8"-11 angle grinder or drill spindle.
Observe the Max RPM rating on the Specifications table — 12,000 RPM for sizes 5/16"–2", and 8,400 RPM for sizes 2-1/4"–4".
For wet drilling, supply water continuously through a swivel adapter to flush debris and cool the diamonds.
For dry drilling, drill in short pulses to let the bit cool; avoid forcing the cut.
Start at a shallow angle to score the surface, then bring the bit upright to drill through — reduces chipping on porcelain and stone.
Inspect the segment regularly; replace when diamonds are worn flush with the matrix.
5/16" — Max RPM: 12,000 — Wet/Dry — VBC7008
Part No.
VBC7008
UPC
749173462726
Size
5/16"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
3/8" — Max RPM: 12,000 — Wet/Dry — VBC7010
Part No.
VBC7010
UPC
749173462733
Size
3/8"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1/2" — Max RPM: 12,000 — Wet/Dry — VBC7013
Part No.
VBC7013
UPC
749173462740
Size
1/2"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
3/4" — Max RPM: 12,000 — Wet/Dry — VBC7019
Part No.
VBC7019
UPC
749173462757
Size
3/4"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
7/8" — Max RPM: 12,000 — Wet/Dry — VBC7022
Part No.
VBC7022
UPC
749173462764
Size
7/8"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1" — Max RPM: 12,000 — Wet/Dry — VBC7125
Part No.
VBC7125
UPC
749173462771
Size
1"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-1/4" — Max RPM: 12,000 — Wet/Dry — VBC7132
Part No.
VBC7132
UPC
749173462788
Size
1-1/4"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-3/8" — Max RPM: 12,000 — Wet/Dry — VBC7135
Part No.
VBC7135
UPC
749173462795
Size
1-3/8"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-1/2" — Max RPM: 12,000 — Wet/Dry — VBC7138
Part No.
VBC7138
UPC
749173462801
Size
1-1/2"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-3/4" — Max RPM: 12,000 — Wet/Dry — VBC7145
Part No.
VBC7145
UPC
749173462818
Size
1-3/4"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2" — Max RPM: 12,000 — Wet/Dry — VBC7250
Part No.
VBC7250
UPC
749173462825
Size
2"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2-1/4" — Max RPM: 8,400 — Wet/Dry — VBC7258
Part No.
VBC7258
UPC
749173462832
Size
2-1/4"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2-3/8" — Max RPM: 8,400 — Wet/Dry — VBC7260
Part No.
VBC7260
UPC
749173462849
Size
2-3/8"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2-1/2" — Max RPM: 8,400 — Wet/Dry — VBC7263
Part No.
VBC7263
UPC
749173462856
Size
2-1/2"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
3" — Max RPM: 8,400 — Wet/Dry — VBC7376
Part No.
VBC7376
UPC
749173462863
Size
3"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
4" — Max RPM: 8,400 — Wet/Dry — VBC7410
Part No.
VBC7410
UPC
749173462870
Size
4"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
Property
Detail
Bond
Vacuum-Brazed Diamond
Thread
5/8"-11
Application
Wet or Dry Drilling
Materials
Granite, Porcelain, Concrete, Marble, Engineered Stone
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.
Your cart
Alpha Professional Tools
Alpha Vacuum-Brazed Diamond Core Bit for Stone Drilling
Regular priceFrom$21.31 USD
Unit price
Alpha® Vacuum-Brazed Diamond Core Bits
Alpha® Vacuum-Brazed Diamond Core Bits deliver unmatched cutting power on granite, porcelain, concrete, marble, engineered stone and more. Vacuum-brazed diamond retention technology provides maximum durability with consistently fast, clean cuts, smooth edges and minimal chipping. Versatile for both wet and dry drilling, these bits are available in 16 sizes from 5/16" through 4", all with a standard 5/8"-11 thread for direct mounting on angle grinders and drill motors.
Features
Unmatched cutting power on granite, porcelain, concrete, marble & engineered stone
Vacuum-brazed diamond retention for superior durability
Fast, clean cuts with smooth edges and minimal chipping
Versatile — wet or dry drilling
Sintered segment with undercut protection for stable drilling
Standard 5/8"-11 thread fits common angle grinders and drill motors
16 diameters from 5/16" to 4"
Part No.
Diameter
Thread
Max RPM
UPC
VBC7008
5/16"
5/8"-11
12,000
749173462726
VBC7010
3/8"
5/8"-11
12,000
749173462733
VBC7013
1/2"
5/8"-11
12,000
749173462740
VBC7019
3/4"
5/8"-11
12,000
749173462757
VBC7022
7/8"
5/8"-11
12,000
749173462764
VBC7125
1"
5/8"-11
12,000
749173462771
VBC7132
1-1/4"
5/8"-11
12,000
749173462788
VBC7135
1-3/8"
5/8"-11
12,000
749173462795
VBC7138
1-1/2"
5/8"-11
12,000
749173462801
VBC7145
1-3/4"
5/8"-11
12,000
749173462818
VBC7250
2"
5/8"-11
12,000
749173462825
VBC7258
2-1/4"
5/8"-11
8,400
749173462832
VBC7260
2-3/8"
5/8"-11
8,400
749173462849
VBC7263
2-1/2"
5/8"-11
8,400
749173462856
VBC7376
3"
5/8"-11
8,400
749173462863
VBC7410
4"
5/8"-11
8,400
749173462870
Select the correct diameter for your hole; thread the bit onto a 5/8"-11 angle grinder or drill spindle.
Observe the Max RPM rating on the Specifications table — 12,000 RPM for sizes 5/16"–2", and 8,400 RPM for sizes 2-1/4"–4".
For wet drilling, supply water continuously through a swivel adapter to flush debris and cool the diamonds.
For dry drilling, drill in short pulses to let the bit cool; avoid forcing the cut.
Start at a shallow angle to score the surface, then bring the bit upright to drill through — reduces chipping on porcelain and stone.
Inspect the segment regularly; replace when diamonds are worn flush with the matrix.
5/16" — Max RPM: 12,000 — Wet/Dry — VBC7008
Part No.
VBC7008
UPC
749173462726
Size
5/16"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
3/8" — Max RPM: 12,000 — Wet/Dry — VBC7010
Part No.
VBC7010
UPC
749173462733
Size
3/8"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1/2" — Max RPM: 12,000 — Wet/Dry — VBC7013
Part No.
VBC7013
UPC
749173462740
Size
1/2"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
3/4" — Max RPM: 12,000 — Wet/Dry — VBC7019
Part No.
VBC7019
UPC
749173462757
Size
3/4"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
7/8" — Max RPM: 12,000 — Wet/Dry — VBC7022
Part No.
VBC7022
UPC
749173462764
Size
7/8"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1" — Max RPM: 12,000 — Wet/Dry — VBC7125
Part No.
VBC7125
UPC
749173462771
Size
1"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-1/4" — Max RPM: 12,000 — Wet/Dry — VBC7132
Part No.
VBC7132
UPC
749173462788
Size
1-1/4"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-3/8" — Max RPM: 12,000 — Wet/Dry — VBC7135
Part No.
VBC7135
UPC
749173462795
Size
1-3/8"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-1/2" — Max RPM: 12,000 — Wet/Dry — VBC7138
Part No.
VBC7138
UPC
749173462801
Size
1-1/2"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
1-3/4" — Max RPM: 12,000 — Wet/Dry — VBC7145
Part No.
VBC7145
UPC
749173462818
Size
1-3/4"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2" — Max RPM: 12,000 — Wet/Dry — VBC7250
Part No.
VBC7250
UPC
749173462825
Size
2"
Type
Wet/Dry
Attachment
Max RPM: 12,000
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2-1/4" — Max RPM: 8,400 — Wet/Dry — VBC7258
Part No.
VBC7258
UPC
749173462832
Size
2-1/4"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2-3/8" — Max RPM: 8,400 — Wet/Dry — VBC7260
Part No.
VBC7260
UPC
749173462849
Size
2-3/8"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
2-1/2" — Max RPM: 8,400 — Wet/Dry — VBC7263
Part No.
VBC7263
UPC
749173462856
Size
2-1/2"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
3" — Max RPM: 8,400 — Wet/Dry — VBC7376
Part No.
VBC7376
UPC
749173462863
Size
3"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
4" — Max RPM: 8,400 — Wet/Dry — VBC7410
Part No.
VBC7410
UPC
749173462870
Size
4"
Type
Wet/Dry
Attachment
Max RPM: 8,400
Thread
5/8"-11
Commodity Code
8207.50.8000
Country of Origin
China
Property
Detail
Bond
Vacuum-Brazed Diamond
Thread
5/8"-11
Application
Wet or Dry Drilling
Materials
Granite, Porcelain, Concrete, Marble, Engineered Stone