Check the listing for details. 56107Dynabrade PAD NON VAC PREMIUM 6IN PSA. Condition: New. Listed at 38.80 USD. Features and Benefits: 3/8" thickness urethane, medium density, 5/16"-24 male thread; Sanding pads are perfectly weight-mated to Dynabrade tools, for achieving consistent swirl free finishes; High quality backup pad; weight mated for smooth running and minimal tool vibration; Ideal for PSA-type disc adhesion; remove abrasive adhesive paper liner and press abrasive to vinyl-face sanding pad; Quick disc removal; 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".