1.Aluminum alloy 2.Used for shaft fixing and positioning, linear slide stop and locking the rod shaft end 3.Easily installed where major disassembly would otherwise be required 4.High quality aluminum alloy material, lightweight, surface oxidation resistant and corrosion resistant, durable and strong 5.Main Color: Silver, Red 6.If you have any questions, please contact us promptly, we will reply you within 24 hours