4-1/2" Dry Diamond Core Drill Bits for Brick, Block or Masonry, 9.5" Drilling Depth, 5/8"-11 Arbor

4-1/2" Dry Diamond Core Drill Bits for Brick, Block or Masonry, 9.5" Drilling Depth, 5/8"-11 Arbor

MULTIPURPOSE - designed to drill soft brick and building block HEAVY DUTY - embedded diamond concentration guarantees longer core life and efficient drilling ARBOR SIZE - 5/8"-11 threaded arbor DRILLING DEPTH - 9.5" drilling depth GRIT SIZE - #30/40 grit size Dry core drill bits with high diamond concentration and quality, for efficient coring and extended life. Perfect for drilling soft brick or building block only. 10mm segment height with 9.5" drilling depth. 5/8"-11 threaded arbor, use dry or wet with handheld core drills or core drill rigs. Use on rotary mode only! Please do not use hammer mode as this can cause damage to the diamond segments and core bit. Specifications: MULTIPURPOSE - designed to drill soft brick and building block only HEAVY DUTY - embedded diamond concentration guarantees efficient coring and extended life ARBOR SIZE - 5/8"-11 threaded arbor 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) ROTARY MODE ONLY - please only use rotary mode, no hammer mode as this cause damage to the diamond segments and core bit