US PRO Air Die Grinder Set This set includes a complete set of grinding stones giving you complete flexibility for most grinding needs. It’s ideal for grinding, edge-breaking, porting and polishing. Its compact design allows manoeuvrability in tight areas giving you a quality finish in even the tightest gaps Single hand operation Die grinder complete with 1/8″ and 1/4″ arbours 10 Mounted Grinding Stones 2 x Spanners Includes Free Blow Moulded case for protection Contents: 1 x 1/4″ (6mm) Mini Die Grinder (Length: 157mm) Free Speed: 25,000 RPM 2 x Hand Wrenches 5 x 3mm (1/8″) Mounted Grinding Stones 5 x 6mm( 1/4″) Mounted Grinding Stones 1 x 3mm (1/8″) Colette 1 x 1/4″ BSPT Male Quick Plug