Master mechanic, 5 piece, 1/2", thin wall impact socket set with wheel protector, 1/2" drive, 6 point, deep length, set includes 1 each of the following sizes: 17 mm , 19 mm , 21 mm, 13/16 inch, and 7/8 inch, for removing lugs on high end wheels & rims without damaging or scratching chrome or powder coat finishes, chrome molly material.