Pool Cue Joint Protectors in 3 Sizes: 3/8-10, 5/16-14, 5/16-18 with Billiard Evolution Drawstring Bag Protect your cues with our sturdy joint protectors Set of 3 sizes: 5/16" x 18, 5/16" x 14, 3/8" x 10 Includes a handy Billiard Evolution drawstring bag. Fast shipping via the US Postal Service.