Features: Thread connection: R25, R28, R32, R38, T38, T45, T51, ST58, GT60 and ST68. Carbide profile: Spherical, ballistic and parabolic. Bit Faces: flat, concave, convex and drop-center, uniface. Bits Diameters: 33mm-152mm Bit body: standard and retrac Our offering covers all construction, quarrying and mining drill &blast applications from soft to hardest rock conditions. Please find the most suitable product for your needs on our on-line catalogue! » Drifting and tunneling drilling equipment » Reaming equipment » Bench and production drilling » Taper drilling tools » Integral drilling tools » Coal mining bits » Shoulder drive drilling tools » Rock drill machine » Button bit grinder » Grinding cups