RS Pro Miniature Nut Spinner Sets. RS Pro Miniature Nut Spinner Set is a high-quality kit suitable for professionals or enthusiast. Chrome-vanadium steel nut driver blades ensure safe and long life service. The set is supplied in handy, plastic wallet. Features ; Benefits High quality, miniature, metric nut drivers. Nickel plated knurled handles with hardened driving sockets Revolving heads and tommy bar holes Supplied in plastic wallet