EDiamondTools Dry Diamond Core Drill Bits - 112

MULTIPURPOSE designed to drill soft brick and building block PILOT BIT ADAPTER includes 12 shank pilot bit adapter HEAVY DUTY embedded diamond concentration guarantees longer core life and efficient drilling GRIT SIZE 3040 grit size DRILLING DEPTH 95 drilling depth WET OR DRY recommended to use wet or dry with handheld core drills or dedicated core drill rigs ROTARY MODE ONLY please only use rotary mode with our core bits