Availability Axminster: Delivery 10-15 working days! Milling Accessories for Rotary Multi-Tools PROXXON Spherical Diamond Grinding Bit Proxxon 111864 BGN18.79 Achieve precise grinding, engraving, and chisellingSpherical shape with 4.4mm tip diameter for precision workEven diamond dust coating for durability and performanceStainless steel bodies and shafts for strength and longevitySuitable for steel, glass, ceramics, porcelain, and plastics Add to cart