EDiamondTools 2-1/2" Diamond Core Drill Bit for Brick, Block w SDS Max Pilot Bit Adapter

MULTIPURPOSE - designed to drill soft brick and building block; PILOT BIT ADAPTER - includes SDS Max pilot bit adapter. HEAVY DUTY - embedded diamond concentration guarantees longer core life and efficient drilling. DRILLING DEPTH - 9.5" drilling depth; GRIT SIZE - #30/40 grit size. WET OR DRY - recommended to use with handheld core drills or dedicated core drill rigs (rotary mode only)