Smatree Thumbscrew has a O-Ringï¼Œit is more resistant to vibration to the stock screws, yet it is not essential for so put them away when you dont need it.
Billet Aluminum Thumbscrew, high-Strength, high rigidity & precision CNC machining aluminum alloy srews
|Length ||About 2.2 inches |
|Colour ||Blue |
|Material|| Precision CNC machining aluminum alloy |