Saddle: Hoppley seat Seat post: Club 25.4mm x 300mm chromed steel or aluminum with a welded rectangular mounting bracket, 4 hole Seat post clamp: Nimbus (silver) quick release, aluminum Frame: Trainer round crown 12" (black) steel with 40mm stamped maincap bearing housings Hub/axle: UDC cotterless (black) 20H, hardened splindle,100 mm center bearing to center bearing Spokes: 14G. stainless chrome (72mm in length for radial) with silver nipples Rim: United 16" (chrome) 20H, singlewall, steel Rim strip: Rubber Tube size: 12 1/2" x 2 1/4" Tire: Innova 12 1/2" x 2 1/4" Crank arms: United (chrome) 90mm, cotterless, steel Pedals: United, 9/16" threads, plastic Bearings: 17mm x 40mm Approx. cycle weight: 8 lbs. ~This is a beginner cycle with a single-walled rim and is not meant for advanced riders. Ages: 4-6 is a perfect fit.