These spring loaded hand retractable plungers are used to prevent any change in locking position due to lateral force. Pulling up on the handle retracts the plunger pin into the body. The short body allows the plungers to be used in confined spaces. The body is made from steel with a black oxide finish. The knob is made from black plastic. Plungers are supplied with a jam nut. The plunger pin is ground and hardened. Plungers without jam nuts are available.