cross bits diameter: 32mm-65mm;

taper degree: 6, 7, 11, 12;

water hole: 3, 5;

theread: R, T, H;

Our company main products are rock Drilling tools and mining tools, include five series, more than 500 types. They are Tapered Drilling Tools, Threaded Extension Drilling tools, mining tools,Down The Hole Tools, and coal mining tools. Our products are well sold all over the china market, also export to USA, Japan, Canada, Australia, South-east Asia. All the products have got approvalled by our customers.