Mavic XA Elite Carbon Wheel Rear 29'' / 622 Holes: 24 12mm TA 148mm Disc IS 6-bolt Shimano HGMavic's ultimate performance and reliability for trail adventurers now optimized for the new breed of larger trail tires Full carbon rim delivers quick acceleration and a responsive feel. 30mm internal width rims are optimized for larger trail tires. Hookless rim profile reduces tire burps and creates a stronger rim TECH SPECS Axle Type 12mm TA Freehub Body Shimano HG Hub Model ID360 Hub Spacing 148mm Position Rear Rim Color Black Rim Construction