KCNC Jockey Wheel Pulley Ultra Light 13T Shimano Campagnolo Sram Bike Blue Brand: KCNC Size: Teeth: 13T Color: BLUE Material: 7075 anodized alloy Compatible with Shimano, Campagnolo and SRAM X-0 , SRAM FORCE , SRAM RED  Fully CNC machined  Anti-dust bearing cap with Patent Design  Stainless Steel bearing for ultra durability  Sold in 1PC