Superstar PimpDisc Sprocket/Guard  E-mail this product to a friend 6061-T6 alloy 11,35 mm thick (including guard) 15/16" hole + 19 mm and 22 mm adaptors  23T = 97 grams / 3.4 oz 25T = 108 grams / 3.8 oz 28T = 123 grams / 4.3 oz This product qualifies for quantity discount pricing.what's this?
Superstar PimpDisc Sprocket/Guard Sprocket Spec-28T, Color-Black This product qualifies for quantity discount pricing.what's this?