Removes corrosion & dirt from hubs, especially useful for cleaning round the base of studs. Suitable for most HGV wheel studs up to 28mm in diameter. Features an impact drive locking sleeve, with a knurled ring to aid tightening & loosening the abrasive discs. Includes 6x abrasive discs, sizes: 50 x 12, 50 x 13, 50 x 14, 60 x 16, 60 x 22 & 60 x 28mm. Use with a 1/2"D impact gun or power tools.