Suitable Stronger Rimmed Rear wheel that suits Dahon Speed and Vitesse D7 and many other bikes Double Wall Aluminium Rim, 7 Speed Cassette (not screw-on freewheel) Alloy hub and 28 Stainless steel spokes. Nutted (not quick-release) Colour : Silver Hub, Silver Rim, Silver SS Spokes. 130 mm Width Hub 20" 406 Rim. Suit Tyres up to 20 x 1.75" width.(NOT RECOMMENDED FOR 2.0" TYRES)