From the Manufacturer
Hawera carbide rotary hammer bits feature tips that stay sharper longer and deliver more holes within their ANSI specification than competitors' bits. Also, Hawera shafts wear at a much slower rate than most others and can take more abuse because of Hawera's technologically advanced conditioning process. Manufactured to ANSI standards, Hawera bits also meet and exceed ISO (International Standards Organization) standards. 98 percent of the carbide tips are molded to the specific ANSI size. Only 2 percent (specials) of all bit diameters are ground to size. SDS-max rotary hammer 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
