Features and Benefits: * Unique vinyl-face pads have ideal disc adhesion, allows for quick disc removal * Our exclusive single-piece hub design reduces face-run-out to only .002 - .005" * Perfectly weight-mated for use with Dynabrade Random Orbital Sanders, also fits most competitors models 6" Non Vac vinyl face disc pad - medium urethane with 5/16" - 24 Male Thread and is 3/8" thick.