... ",3/16",1/4",5/16",3/8"We have the following workshops: 1. Workshop 1: diamond electroplated products: diamond burrs ... food, chemical and aerospace fields Product:We are one of the most professional companies exporting construction tools and machines, includingdiamond cutting ... exporting all kinds of DIY tools to Japan, Germany, the USA and Australia Ti Cross Type, Carbide Tipped drill Bit 5pcs/set