Best Dry Core Bits

Steel Dragon Tools 3-Piece 1.5-inch to 2.5-inch Dry Diamond Core Drill Bit Kit with Hex SDS Adapters and CaseSteel Dragon Tools three-piece dry diamond core drill bit kit for drilling holes in block, brick, concrete, and other materials. Bit sizes included: 1-1/2 in. (38 mm), 2 in. (51 mm), 2.5 in. (63 mm).All core bits are 6-inches in length with 10 mm laser-welded split segments and 13/16-inch female threads. Includes 0.400 x 8 in. removable tapered pilot drill bit, SDS adapter with 13/16-inch male threads, hex adapter with 13/16-inch male threads, drift key, and aluminum carrying case.Steel Dragon Tools diamond core drill bits have a one (1) year warranty against manufacturer defect. Factory conforms to ISO-9001-2000 Quality Control Systems and ISO-14001-2004 Environmental Systems.Specifications: Bit Sizes: 1-1/2 in., 2 in., 2-1/2 in.Drilling Depth: 6 in.All bits feature 13/16-inch female threads.1-1/2 in. x 6 in. dry core drill bit with three (3) laser-welded split segments.2 in. x 6 in. dry core drill bit with five (5) laser-welded split segments.2.5 in. x 6 in. dry core drill bit with nine (9) laser-welded split segments.Extension Size: 8 in. x 1-1/8 in. extension with 13/16-inch female threads.10 mm segment height for improved operating life.6-inch barrel height and 7-inch overall height.Removable tapered pilot drill bit (0.400 x 8 in.).SDS adapter with 13/16-inch male threads.Hex adapter with 13/16-inch male threads.Includes drift key and aluminum case with foam to protect drill bits.