產品描述
| Product Name | Retrac thread buttons bits |
| Description | 1.Made from top quality steel and tungsten carbide 2.Apply hot-insertion processing procedure to insert buttons 3.Optimized designs improve the drilling speed |
| Material | Alloy steel and tungsten carbide |
| Body Type | Normal type and retract type |
| Thread type | R22,R25,R28,R32,R38,T38,T45,T51,ST58,ST68,GT60 |
| Diameter | 34mm-127mm |
| Button bit shape | Ballistic and Spherical |
| Face shape | Drop-center shape and Flat shape |
