Thread button bits made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment so that it can withstand the toughest rock drilling demands, and transmit intensive impact energy into the rock with the least possible loss of energy According to different drilling application, we have different design to meet customers with good quality and good price . No matter what kinds of rock-Soft rock, loose-medium rock, hard rock and any other special formations, just tell us what you need and leave others at our disposal, we will handle the following, our special Tailored service is waiting for you upon your demand.