Never worry about losing a jump cup pin again with this innovative, single unit jump cup that features powder coated, high quality, professional grade steel. No fuss, no banging out stuck pins! You can change this cup with one hand. The 3/8" diameter pin arm fits easily into the standard 1/2" pin hole found in commercial and home-made jump standards. The pin is 3" in length. The powder coated steel insures that your jump cups will have durability and a long life in your jump ring in all weather conditions! The black powder coating will not crack, chip, or peel.