.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}CeramicSpeed OSPW X Pulley Wheel System for SRAM Eagle AXS - Alloy Pulley Carbon Cage Black. The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.Features a 14-tooth upper and 18-tooth lower aluminum pulley wheels with Grade 3 Silicon Nitride balls to provide absolute optimization of the rear derailleur The narrow wide tooth profile ensures durable chain retention Robust cage is crafted from carbon reinforced polyamide for durability and light weight Three spring tension settings allow you to customize performance and reduce chain drag Fits 10-50 tooth cassette range table{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;font-weight:350;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;}.desc ul{font-size:24px;font-weight:600;margin-left:-25px;padding-top:35px;border-top:3px solid #f0f0f0;}.desc li{list-style:none;border-bottom:4px solid #eb212e;width:142px;} TECH SPECS Defined Color Black Drivetrain Speeds 12 Fits Brand SRAM Fits Model XX1 Eagle AXS Fits Model X01 Eagle AXS Largest Cog 50 keyword search OSPWS