Quick and easy wheel stud cleaning tool. Supplied with a 1/2"Sq drive / 1/4"Hex adaptor. Six brushes; 12mm(7/16"), 13mm(1/2"), 14mm(9/16"), 16mm(5/8"), 22mm(7/8") & 28mm(1-1/8"). Quick change brushes, use with cordless drill (Max. Speed 1800rpm) or by hand.