Quality and durability combine in the S500 Eagle DUB crankset to deliver consistent performance every time out. Carbon crank arms and an aluminum X-SYNC 2 chainring keep the weight down and the chain in control. DUB technology features a more uniform approach to bottom bracket fitment better sealing against contamination and forward and backward compatibility.Carbon crankset with 3-bolt aluminum X-SYNC 2 chainring for Eagle Drivetrain Ecosystem compatibilityAluminum X-SYNC 2 chainring keep the weight down and the chain in controlDUB technology features a more uniform approach to bottom bracket fitment better sealing against contamination and forward and backward compatibility TECH SPECS 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 .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Rings 32 Number of Chainrings Chain Retaining Single Drivetrain Speeds 12 Chainring BCD Direct Mount SRAM 3-Bolt Chainline/Hub Compatibility 141/148 Boost Hubs Color Black Crank Length (mm) 170 Crank Intended Use Mountain BB Included No Pedal Spindle 9/16" Spindle Interface Type SRAM DUB Defined Color Black