Check the listing for details. 2-1/2" Dry Diamond Core Bit for Brick and Block with 5/8"-11 Pilot Bit Adapte.... Condition: New. Listed at 75.36 USD. 2-1/2" Dry Diamond Core Bit for Brick and Block with 5/8"-11 Pilot Bit Adapter, 9.5" Drilling Depth, 5/8"-11 Arbor ✓ Free 60 Day Returns ✓ Free Express Shipping Description: Dry diamond core bits with 30/40 diamond grits with 5/8"-11 pilot bit adapter. Designed for drilling soft brick or building block. Included pilot bit adapter for 5/8"-11 arbor size, 10mm segment height and 9.5" drilling depth. Use wet or dry with core drills in rotary mode only. Features: MULTIPURPOSE - designed to drill soft brick and building blockPILOT BIT ADAPTER - includes 5/8"-11 pilot bit adapterDRILLING DEPTH - 9.5" drilling depthGRIT SIZE - #30/40 grit sizeWET 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 with our core bits Product Details: Material: DiamondFinish Type: DiamondShank Type: StraightBrand: EDiamondToolsItem dimensions L x W x H: 11.61 x 2.6 x 2.6 inchesProduct Dimensions ‏ : ‎ 11.61 x 2.6 x 2.6 inches; 2.83 PoundsDate First Available ‏ : ‎ January 30, 2017Manufacturer ‏ : ‎ EDiamondToolsBest Sellers Rank: #374,442 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #309 in Core Drill Bits#309 in Core Drill BitsCustomer Reviews: 4.4 4.4 out of 5 stars 100 ratings