Industry Nine Hydra 2 Enduro S Wheel Rear 29 / 622 Holes: 32 12mm TA 148mm Disc IS 6-bolt Shimano Micro SplineI9 Enduro S rim laced with steel spokes to the Hydra 2 hub 041 degrees of engagement (878 points of contact) Approved for SL E bikes (up to 65Nm) TECH SPECS Axle Type 12mm TA Freehub Body Shimano Micro Spline Hub Model I9 Hydra 2 Hub Spacing 148mm Position Rear Rim Color Black Rim Construction Double wall Rim Drilling 32 Rim External Width 34. 1mm Rim Internal Width 30. 5mm Rim Material Aluminum Rim Model Enduro S Skewers Included No Spoke Type