The bungee is actually tuned very soft so it can be used for almost any activity including towing kids on bicycles to make it a one size fits all product

At this length

With its raised square edge centre knobs you will have better traction for climbing and braking even in dusty conditions

There is a plethora of wheel sizes and widths out there now and Park Tool have recognised this and delivered the updated Park TS-4

Spank Hex Front Hub Converter - 28mm Diameter - 15x100mm - 15x110mm Boost - These will convert your Spank Hex Gravel Ø28 front hub

Hope Pro 4 Rear 6 Bolt Disc Hub - 12x150mm - 32 Hole - XD Driver - Orange Heavy/Bulky The bungee is actually tunedThe Pro 4 is an incredibly versatile and easily serviceable hub that builds upon Hope's reputation for bulletproof quality and attention to detail. The hubs are machined from a single billet of 2014 T6 aluminium and run on stainless steel sealed cartridge bearings for smooth running and outstanding reliability. The 4 pawl ratchet system has 44 teeth with solid and reliable 8. 2 deg engagement with that unmistakable Hope sound. The Pro 4 spoke flange