The Tuff Scuff Joint Protector is a 2-in-1 tool designed to protect the joint pin and threads on your cue when it's not being used and has a built in scuffer to maintain the tip shape. This is a handy and durable tool that's made out of aluminum with a satin smooth black finish and diamond cuts. Protect your investment and always keep a scuffer around when you're playing with the Tuff Scuff Joint Protector Tip Tool. Includes a replaceable scuffer disk that's easy to install, just peel the back off the self-adhesive disc and place it on the indented end of the joint protector. This joint protector is available in 3/8 x 10 thread size.