Soma Rufus Urban Cruiser Frameset 38cm Purple4130 Double butted chromoly frame and fork Rear rack & fender mounts, cargo cage mini rack bosses on fork with one set of thru bosses Three sets of water bottle bosses Cafe lock mount Kickstand plate International Standard disc brake tabs (140 160mm rotors suggested) Wheel size: 20 inch (ISO 406) BMX size Tire clearance for 20 x 2. 3 inch (20 x 2. 0 inch w fenders) Hub spacing: 135mm, rear, 100mm fork Fits 1 1 8 inch headset (EC34 28. 6 EC34 30