Reduce the risk of bending your pool cue's joint pin and damaging your pool cue's joint collar with a quick-release JPA-NL aluminum joint protector. A simple joint protector is the number one way to protect your investment from damage. This joint protector set is made from durable and light weight aluminum and comes with 1 male and 1 female piece made to fit a Lucasi quick-release (JPA-NL) joint. Available in 4 colors.