RS Pro Carborundum Cutting DiscsRS Pro Carborundum Cutting Discs. 36 x 20mm discs used for precise cutting through screws, bolts, wire, chain & plastics. Designed to cut small metal shafts and tubes as the wheels are traditional resin-bonded. Ideal for hobby, craft, electronics, restoration, small DIY and renovation.Features and Benefits• Diameter 20 mm x 0.6 mm• 36 carborundom cutting discs• Maximum speed 20,000 rpm