Spline Shank Core Bit Bosch GBH228LRT 1-1/8" SDS Bulldog Xtreme Rotary Hammer Certified Refurbished 346489057 Masonry Drilling Bit Wave design transfers energy to bit more effectively for up to 40 percent faster drilling versus previous design , 17 In. Bosch's 22-in X 2-in rotary hammer core bit with wave design offers less vibration and quieter operation thanks to an efficient design that maximizes the power of the hammer. Shop more rotary hammer bits at today Integral shank for better power transmission The Bosch rotary hammer core bit with wave design is easy to use. This SKU has a 2 in diameter. This rotary hammer core bit with wave design is made of carbide tipped with a finish. The overall length measures 22 in. Packaged 1 each BOSCH developed custom-manufactured carbide and diffusion bonding technology to provide better performance and durability. BOSCH, Spline Shank, 2 in Core Dia, Core Center Bit - 2LDH5|HC8015 For masonry/concrete drilling , One-piece design