Industry Nine Trail S 1/1Built for XC through aggressive trail use 1 1 hubs with 90 points of engagement (4 degrees) 28 spokes Attributes Rim Drilling 28 Rim Material Aluminum Wheel Tire Type Tubeless Ready Hub Model I9 101 Rim Color Black Rim External Width 31mm Spoke Type Stainless Rim Internal Width 27mm Rim Model Trail S Skewers Included No Wheel Diameter ISO 29'' 622 Rim inner width range 22 27. 9mm Valve Presta Wheel Brake Comp. Disc IS 6 bolt Rim Construction Double