Easy screw-on for replacement to protect the end of billiard cue. Feature: 5 pcs screw-on tips with pool cue stick ferrules. Easy screw-on to protect the tip of pool cue. Prime polystyrene constructed to prevent splitting of the pool cue tip. Specification: Material: Polystyrene Inner diameter: 12mm /13mm (optional) Package weight: 22g / 0.7oz Package List: 5 * Cue Pool Tip