Product description Universal drill allows processing not only wood or composite materials, but also commonly used mineral materials, such as porothermic blocks, suporex or silicate especially useful for ventilation, air conditioning, heating installers and electricians due to its universal application some mineral materials such as suporex and ceramic blocks are faster to drill than diamond drills. Yato brand drills available, both with Widia tip (YT-43990) and HSS (YT-43991, YT-43992) full range of core drills from 16mm to 152mm diameter Parameters Diameter [mm]: 92 Application: universal