Product Type : Jockey wheels JRC Components Ceramic Pulley Wheels are compatible with all SRAM Eagle Systems. - Narrow-Wide Ceramic 12 + 14tooth Jockey Wheels are crafted from billet aluminium, CNC machined and finally anodised before having hybrid ceramic bearings installed. - Our narrow wide jockey wheels come in on the scales at only 27 grams per set. - The jockey wheels feature a hybrid ceramic bearing for added longevity and lessened friction. - Our hybrid ceramic bearings are fully sealed and packed with grease to ensure flawless use all year round. - Many ceramic bearings companies play on the marketing ploy of being able to spin for a matter of minutes however this typically means they use a light lubricant instead of a grease which is easily washed away and leads to fast wear. - Compatible with SRAM Eagle 12 speed XX1 / X01 Eagle, GX Eagle, NX Eagle, AXS Eagle rear derailleurs. - Available in 7 Colour options. - Includes:14 / 12 tooth Pulley Wheelset (1 set = 1x upper 12t & 1x lower 14t) with pressed ceramic bearings. - Etched JRC logo dust caps.