Bearing screw locking fixed steel hub. CST 20 x1.75 A/V. 2.7-speed 14T-28T freewheel.
ROCKBROS ACS 16“Folding Bike 9 Speed Lightweight Aluminum Frame Disc Brake Green
ROCKBROS ACS 16"Folding Bike 9-Speed Disc Brakes Adjustable Stem Aluminum Frame
ROCKBROS MBS 20"Folding Bike,Shimano 8-Speed Aluminium Frame V-Brake Large Wheel
ROCKBROS HRS 16"Folding Bike 7-Speed Compact Lightweight Urban Bike for Adults
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
