BOSCH HC8540 3 9/16 in. x 12 SDS max Rotary Hammer Core Bit, Gray

Wave design transfers energy to bit more effectively for up to 40 percent faster drilling versus previous design Carbide-tipped centering bit Asymmetrical carbide teeth for faster cutting, longer life All-in-one core transmits power directly to the end of the bit Maximum core size is 2-5/8 In. deep, Weight: 3.88 pounds, Manufacturer: Bosch