Why you need it Makes moving a folding For Bike simple and effortless: convert your bike into a wheeled unit for easy pushing on flat surfaces without lifting. Reduces time and hassle when transporting or stowing a folding bike in tight spaces. Key benefits Tool, fast installation: clamps directly onto the seatpost tube for quick mounting and removal with no tools required. Smooth, reliable rolling: aluminum alloy wheel delivers steady rotation for seamless pushing on flat ground. Clear compatibility: nonrotating wheel fits seatposts with a 44 mm outer diameter; rotating wheel fits inner diameters of 28–32 mm, covering a wide range of folding For Bike seatposts. Userfriendly design: secures to the seatpost without interfering with normal seatpost removal, so regular adjustments remain easy. Features at a glance Installation: direct tube mounting, quick disassembly and installation. Material: durable aluminum alloy wheel for smooth performance. Fit: nonrotating wheel — 44 mm outer diameter seatposts; rotating wheel — inner diameter 28–32 mm. Operation: designed for pushing your folding For Bike on flat surfaces with minimal effort. Practical use scenarios Commuting: roll your folded For Bike through train stations and platforms instead of carrying it. Apartment or office moves: glide the bike down hallways and into storage without lifting. Travel and transit: maneuver your folding For Bike through airports, parking garages, or short walks between transit connections. This auxiliary wheel is a simple, durable accessory that improves the daytoday portability of your folding For Bike while preserving seatpost functionality and offering quick, tool installation.