Suggested Retail:$51. BOSCH 5/8 in. x 16 in. x 21 in. SDS-MAX Speed-X Carbide Rotary Hammer Drill Bit for Concrete Drilling. Bosch carbide rotary hammer bits feature tips that stay sharper longer and deliver more holes within specification than competitive bits. Manufactured to ANSI specification B212.14. SDS-MAX rotary hammer bits fit Bosch SDS-MAX hammers and competitive SDS-MAX drive hammers and Hilti hammers using TE-Y and TE-FY shanks. Unrivaled power from solid carbide head with robust S-cutter design for added speed and life.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. PAID DELIVERY AND 7 DAY ALTERNATE PICK-UP ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.