Astro 7870 Chrome Protective Plastic Sleeve & Shallow Broach Socket Set Size range: 13/16, 3/4, 7/8, 1, 1-1/16, 17mm & 21mm Hollow design creates room for removing longer bolts by pushing out the plastic insert Protective sleeves & internal plastic inserts An absolutely necessary tool with today's high dollar wheels Weight 5 lbs.