SUNringle Duroc 30 24" Wheel Adult-level performance, built for kids. The SUNringle Duroc 30 J-Unit brings the same ride quality and performance engineering of SUNringle's adult wheel lineup down to a 24" platform designed specifically for young riders. Built with Wheelsmith DB14 double-butted spokes and brass nipples, SUNringle SRC cartridge bearing hubs, and a tubeless-ready rim, the J-Unit is a proper high-performance wheel for kids who demand more than budget-grade equipment can offer. Features SUNringle Tubeless Ready (STR) for an effortless tubeless setup Wheelsmith DB14 double-butted spokes with brass nipples for a reliable, durable build SUNringle SRC cartridge bearing hubs for smooth, long-lasting performance Doublewall construction with welded seam for added rim strength and durability SPECIFICATIONSWheel Size24"Rim Material Alloy Inner Rim Width26mm Spoke Count28HHub SUNringle SRC cartridge bearing Front Axle Options100x15mm / QR or 110x15mm Boost Rear Axle135/142mm w/ caps or 148x12mm Boost Tubeless Compatible Yes Front Wheel Weight792g Rear Wheel Weight887g Intended Use Youth Trail / MTB | Sun Ringle | Duroc 30 24" Wheel Front 15X110 6B | Aluminum