Core Bore Premium Black Dry Diamond Core BitsFeatures- Premium black grade dry bits feature wider segments than the heavy duty grade with a heavier core thickness
- They drill faster and last longer than any bit of its kind
- Drill dry through block, brick, and non-reinforced concrete
- Not recommended for concrete with reinforcement or hard materials
- Not all types of brick and block can be drilled - please consult factory
- 9" drilling depth, come with standard 5/8"-11 threading, and easily attach to most hand-held drills
- Jacobs Chuck Adapter available for hammer drills 5/8"-11 thread to straight shank
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| Diameter | Min Amps | Max/Min RPM | | 1" | (25mm) | 6 | 6000/2300 | | 1-1/4" | (32mm) | 6 | 6000/2300 | | 1-1/2" | (38mm) | 6 | 6000/2300 | | 1-3/4 | (44mm) | 7 | 5000/1600 | | 2" | (51mm) | 7 | 5000/1200 | | 2-1/4" | (57mm) | 7 | 5000/1200 | | 2-1/2" | (64mm) | 7 | 5000/800 | | 3" | (76mm) | 10 | 5000/800 | | 3-1/2" | (83mm) | 10 | 5000/700 | | 4" | (102mm) | 10 | 5000/700 | | 4-1/2" | (114mm) | 10 | 5000/700 | | 5" | (127mm) | 10 | 5000/700 | | 6" | (152mm) | 10 | 2500/600 |
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