Fully developed, designed, and manufactured in Denmark by CeramicSpeed, the Oversized Pulley Wheel System for SRAM eTap represents a technological advancement for the cycling industry. Combining the highest quality materials with a unique design, the OSPW system offers reduced friction and increased durability, enhancing your competitive edge. Thanks to the OSPW System for SRAM eTap, power savings start from 40%, and the CeramicSpeed Bearings inside guarantee a longevity 3 to 5 times greater than standard pulleys commonly used on the market. The watt savings with a CeramicSpeed OSPW system for SRAM eTap start from 1.6 watts. The OSPW system for SRAM eTap derailleurs is compatible with cassettes up to 32 teeth and with both short cage and WiFli derailleur bodies. The product is for eTap 11-speed and is not compatible with SRAM eTap AXS 12-speed. Included in the package: 3D printed Ti OSPW complete for SRAM eTap system CeramicSpeed UFO TECH Bearing Oil 15 ml. dropper bottle for pulley Adhesive IMPORTANT: During travel, remember to remove the entire rear derailleur with an Allen key, as the OSPW system does not fit most bike travel bags and could be damaged if left installed.