high quality Material: : Made of durable 304 stainless steel, all have high hardness, no rust, wear resistance, corrosion resistance, and long service life, and not easy to deform and bend. The ball cap is made of aluminum alloy material, electroplated in oxidizing black, with an elegant appearance and not easy to scratch.Design: : This t handle quick-release pin is a kind of fastener connecting piece for quick locking, fastening, adjusting, and fixing, which can lock for frequent connections quickly and easily. Equipped with lanyard cable to prevent loss, and easy to carry.Specification: : Package Content: 1pcs x T Handle Locking Pin; Diameter: 16mm (5/8"); Usage Length: 80mm (3-5/32"); Total Length: 138mm (5.43")Installation: : Press the button on the handle to retract the steel ball on the head of the pin body, then pass the quick-release pin through the pinhole. When the button is released, the steel ball pops out, the quick-release pin cannot be pulled out from the pinhole.Application: : The ball lock pins are processed with high precision, which is suitable for various high-precision positioning and plugging. Pull pin is suitable for speaker manufacturing, industrial manufacturing, fixture manufacturing, aviation manufacturing, rapid bridge paving, OEM equipment manufacturing, etc.