42mm 7 Buttons Tapered Tungsten Carbide Button Drill Bit for Rock

=== Base Info ===

• Model NO.：42mm 7 Buttons Tapered drill bits
• Surface Treatment：Spray-Paint
• Manufacturing Process：Forging
• Material：Alloy Steel
• Carbide Grade：Yk05
• Model No.：36mm 34mm 7 Degree Tapered Short Skirt Button Bit
• Type：Rock Drill Bit
• Flush Hole：2 or 3
• Customized：Customized
• Diameter：28~45mm
• Slim：Copper Slim
• Trademark：ZZROCKKING
• Transport Package：Wooden Box,Plastic Box
• Specification：36mm 34mm 32mm
• Origin：Hunan

=== Description ===