Industry Nine GR310 Carbon 29" Wheelset Versatile, Strong, and Stiff Wheels are an excellent upgrade to any mountain bike. With better wheels, you'll roll faster, climb more efficiently, and shred better. The Industry Nine GR310 Carbon 29" Wheelset is proven at the most prestigious events in the mountain bike world, from UCI Downhill to Rampage and countless events in between. The Grade family of wheels excels where mortals fear to fly. The latest generation Grade 310 stays true to that heredity, remaining fearless in the face of impossible conditions. Industry Nine widened the bead walls, refined the lay-up to add more strength, but also tuned the rim to be more comfortable through the chatter. Features32H system hub and spoke chassis form the foundation of the most capable wheelsets Approved for use on Class 1 e-bikes6-pawl Hydra freehub body with 0. 52deg of engagement Straight pull, integrated nipple, one-piece aluminum spokes that thread directly into the hubshell, resulting in a solid, flex-free junction Carbon fiber rims that are lightweight and highly durable SPECIFICATIONSWheel Size29"Material Carbon Rims, Aluminum Hubs Outer Width40mm Inner Width31mm Rim Height-Spoke Drilling32HValve Type Presta Tubeless Yes Tire Type Clincher Brake Compatibility Disc (6-Bolt)Engagement Degree0. 52degFront Axle15x110mm Rear Axle12x148mm Intended Use E-MTB, MTBApproximate Weight1910g (890g F / 1020g R) | Industry Nine | Gr310 Carbon 29" Wheelset 15X110/12X148 6B Hg