Description:Material - The wing handle screw is made of good hardness carbon steel with plastic material, which is wear resistant, corrosion-resistant and oxidation resistant, durable and not easy to break, which can be applied for a long time.Knob Design - The thumb screw knob is a T-shaped ergonomically designed, which provides a comfortable grip and anti-slip effect, and is convenient to use and operate. Adequate finger grip spacing ensures convenience for adjustment and control.Easy to Install - The fully threaded and even pitch constructed to uniform force for locking firmly, not easy to slip. The clamping screw knob can be installed or disassembled freely without any other tools, just need to install or disassemble it by directly turning the screw.
eBay