EDiamondTools 4-1/4 in. Dry Diamond Core Drill Bit for Brick and

Dry diamond core bits with #30/40 diamond grit with 1/2" shank pilot bit adapter. Designed for drilling soft brick or building block. Included pilot bit adapter to 1/2" shank arbor size, 10mm segment height and 9.5" drilling depth. Use wet or dry with handheld core drills or dedicated core drill rigs (rotary mode only).
Dry diamond core bits with #30/40 diamond grit with 1/2 shank pilot bit adapter. Designed for drilling soft brick or building block. Included pilot bit adapter to 1/2 shank arbor size, 10mm segment height and 9.5 drilling depth. Use wet or dry with handheld core drills or dedicated core drill rigs (rotary mode only).

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Dry diamond core bits with #30/40 diamond grit with 1/2 shank pilot bit adapter. Designed for drilling soft brick or building block. Included pilot

4-1/4 in. Dry Diamond Core Drill Bit for Brick and Block, 9.5 in. Drilling Depth, 1/2 in. Chuck Pilot Bit Adapter