Generic Delrin Joint Protector - 5/16 x 14These Joint Protectors are unbranded generic delrin which give a clean look and offer a place for you to add a round label on the ends. Made from a highly durable delrin plastic, these joint protectors will help keep dust, lint and other debris out of your shaft and off your threads. They also help prevent bent joint pins. Fits all cues with a 5 16" x 14 joint.