Add a bit of color to your rear derailleur with KCNC's aluminum pulley bolts. Not only will they look cool, they are perfect for weight weenies looking to save weight were ever possible. Compatible with Campagnolo and Shimano derailleurs Not compatible with SRAM derailleurs Weight:1.5g (2 bolts) | KCNC Derailleur Pulley Bolt Set Black, 2 Bolts