Tapered Drill Bits, Size: 20 mm

Tapered drill bits For tapered drill bits, we have chisel bits, cross bits and button bits, all with various size, smooth design and very good quality, etc. All drill bits are made of high quality raw material and through special heat treatment. 1. Tapered chisel bits The tapered chisel bit is widely used in drilling holes with depth less than 5 meters and diameter ranged in 20-45 mm by light-duty rock drill, like Y6.