Bearing screw locking fixed steel hub. CST 20 x1.75 A/V.
ROCKBROS SKN 20"7-Speed Folding City Bike Steel Frame with Rear Rack Commuter
ROCKBROS ACS 16“Folding Bike 9 Speed Lightweight Aluminum Frame Disc Brake Green
ROCKBROS HRS 16"Folding Bike with 7-Speed Steel Frame Dual C-Brake City Commuter
ROCKBROS VDS 20“Folding City Bike Shimano 8-Speed Steel Frame Wire Disc Brakes
ROCKBROS VDS 20" Folding Bike 8-speed Adjustable Stem Steel Frame Disc Brakes
ROCKBROS 20" Folding Bike with 8-speed Portable Bicycle for Adult Lightweight
