Product Name: 5 Inch High Air Pressure DTH Rock Drill Bit Material: Cast Steel Manufacturing Process: Forging Surface Treatment: Spray-Paint Standard: GB Certification: ISO 9001:2008 Product: DTH Drill Button Bits Keywords: DTH Drill Bits Application: for Down The Hole, Mining Transport Package: Wooden Box Specification: 90-450mm Origin: Zhuzhou Product Description 5 inch high air pressure DTH rock drill bitProduct Information:1. wear resistance2. high efficiency3. long service life4. direct selling with reasonable price5. MOQ: 1pcs for checking the quality6.customized order is availableGeneral application:suitable for cutting, drilling various hard Non-ferrous materials, suchas marble, granite, glass, ceramic, hard concrete and brickCommon grades:YG8C YG11C YK20 YK15.6 YK25 YK45