Polishing pad
Arc Abrasives

PSA and Hook and Loop are fastening systems to allow cloth, paper and film abrasive discs to be quickly attached and removed from a back up pad or platen. PSA is more common in the USA whilst Hook and Loop is popular in Europe and is becoming more popular in the USA.

Hook and loop discs are primarily used in 5" and 6" discs on orbital sanders, while PSA is used on all sizes of disc from ½" to 36". ½" to 4½" discs are used with a shank mounted back up pads on an angle or straight line grinder. 5" and 6" discs are almost exclusively used on orbital sanders. 8" and larger are used on stationary disc machines and pedestal machines with a metal platen.