These "T" handled quick release pins are a fastener connecting piece designed for quick locking, and fixing, which can lock and unlock components quickly and easily. 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 hole. The Pins will not release until the button on the handle is depressed. Made from durable stainless steel, all have high hardness, no rust, wear resistance, and long service life. The T Handle is CNC