Product Description Bosch carbide rotary hammer bits feature tips that stay sharper longer and deliver more holes within their ANSI specifications than competitors' bits. Speed-x SDS-MAX masonry/concrete drilling bits not only fit Bosch SDS-MAX hammers, but also competitive SDS-MAX drive hammers and Hilti hammers using TE-Y and TE-FY shanks. From the Manufacturer Bosch offers a full line of carbide bits, carbide cores and steel points and chisels for hammer drills, rotary hammers and demolition hammers.