Dapple Safety Jump Cups not only eliminate the hassle of lost or stuck jump cup pins, they provide a measure of safety required by some competitions with rules for PSI force of release. Simple to use, these cups feature an adjustable coupler that allows the pin arm to disconnect from the cup when it receives the amount of downward pressure that you set. The cups are reusable after activation with the use of a small Allen wrench, included with the set of two. Durable construction ensures years of use. Made in USA.