JRC Components Ceramic Pulley Wheels are compatible with SRAM Eagle Transmission systems.Our 14 and 16-tooth jockey wheels are made from solid CNC-machined aluminium, anodised, and then fitted with hybrid ceramic bearings.Specifications:.Premium materials:Made from 7075-T6 CNC-machined aluminium for exceptional lightness and durability, combined with hybrid ceramic bearings that reduce friction and enhance efficiency.Enhanced performance:Sealed hybrid ceramic bearings ensure smoother operation and longer lifespan, reducing maintenance and improving ride quality.Pre-greased for flawless year-round performance.Precise shifting:Smooth and accurate shifting in all conditions thanks to the rigidity and precision of the aluminium body.Lightweight and robust design:Each pulley wheel set weighs only 27 grams but is built to withstand demanding riding conditions without compromising performance.