Button Bit, Shank Adapter, Rock Drill manufacturer / supplier in China, offering Long Service Life Tapered Button Bit Significantly Reduces Total Drilling Cost Per Meter in Large Scale Mining Operations, Professional Grade Tapered Drill Bit Manufactured to International Standards for Quality and Safety in Mining, High Efficiency Tapered Button Bit Features Improved Flute Design for Better Cuttings Evacuation in Wet Drilling and so on.