Steel bearing provides smooth paddling performance. 58% lighter and 120% harder than standard materials, ensuring reduced friction and quieter chain rotation. Oversized pulley design with 14-tooth and 16-tooth configurations featuring wide and narrow tooth profiles. Enhances chain engagement precision and minimizes friction for improved performance. Compatible with GX AXS Eagle 12-speed systems, offering reduced drag. Designed for durability, TRiPEAK steel bearing pulleys maintain consistent performance over extended use. Suitable for off-road conditions. Waterproof, dustproof, and resistant to deformation. Features sealed bearings to protect against contaminants and maintain ride quality. Material: Plastic and metal Color: Black Package Contents: 2 x Guide wheels with positive and negative teeth (14T + 16T) 4 x Washers 1 x Wrench Note: Light reflection and display differences may cause slight color variation between image and actual item. Measurement error allowance: +/- 1-3 cm.