EDiamondTools 3 in. High Performance Diamond Core Bit for Granite, Quartz, and Concrete, 2.4 in. Drilling Depth, 5/8 in. -11 Arbor

High performance core bits designed for very fast drilling speed even on hard stone materials (up to 8 on Moh's hardness). Also capable for easily creating mounting holes in granite, quartz and concrete countertops and features a vacuum-brazed side protection to create a smoother core and easier bit removal. Please note, 1/2 in. shank adapter for chuck drills is sold separately. 2.4 in. drilling depth, 8 mm segment height, use wet or dry with angle grinders or handheld core drill (rotary mode only).