R38 76mm 4 Blades Bits with drop centra

Key Specifications:

• Hole: 51 to 115mm
• Thread type: R32, R38, R51, etc.
• Raw material: alloy, carbon, carbide, stainless
• Production process: casting, forging, machining, welding
• Surface treatment: antirust, electro-galvanized, spray-paint, black coating, dacromet

J.B drill bits have great reliability, powerful drilling capacity but low operating cost. High quality materials and professional design, as well as advanced manufacturing technologies result in fast penetration, good performance and long service life. Our drilling tools are widely used for drilling and quarrying in mining industries and other construction fields.