Yato YT-3727 Glass and Ceramics Drill Bit in Sliding Card is a must-have tool that is suitable for professionals or enthusiasts. It is made from high-quality high-speed steel (HSS) with a cylindrical handle (Chuck). The working insert is made of YG6X tungsten carbide. Perfectly built to perform precise drilling in glass and ceramics in industry and crafts. Drill bit diameter: 8 mm.View moreView less