Rim: Ryde ZAC 19 28" / 622x19C aluminum - 36 holes with machined sidewalls 14G - silver Spokes: Stainless steel silver, 36 pieces Hub: Sunrace HBM 53 8/9/10 speed for standard Hyperglide cassette Rim: Weight: 600 grams Material: Double-walled aluminum Tire usage: with inner tube Suitable for tire size: 28-57 mm width Maximum load: 110 kg Brake type: Rim brake Model: ZAC 19 Size: 28" / 622-19C Spoke holes: 36 pieces - 14G double eyelet Maximum spoke tension (N): 1200 Valve hole: 6.5 mm Finish: Silver powder coating with polished sides Hub: Model: Sunrace HBM53 Gears: 8, 9, 10 Brake type: Rim brake Axle: quick release (QR)