*Minimum order quantity for clearance price: 40pcs / £3.90 per unit Collet size 1/4″. Max speed 25000 RPM. Required pressure 90 PSI. Air inlet 1/4″ BSP. Ideal for grinding and polishing metal components. Compact design. One hand operation allows manoeuvrability in tight spaces. Rear exhaust won’t deflect metal chips at operator.