Joint Protectors for Pool Cue Stick with 5/16x14, Comes As a Set - Protect Shaft and Butt, Protect Your Cue Stick Joint Protectors will extend the life of your Cue Joint protectors will protect the pin from damage and will keep debris and lint from getting in your threads. Set contains: 1 Female Joint Protector and 1 Male Joint Protector Will Fit All Cues With 5/16x14 Joint