Aftermarket replacement for the Rock Shox Maxle 15mm axle. These need a 6mm wrench to install and remove so its less likely to get rounded out taking off the wheel with gloves on and a shitty multi-tool. For a bit of redundancy it has a 6mm end on both sides, so if you manage to mangle one side you will always be able to get the axle off
Available in a whole rainbow of colours. Nice to colour match or just have a spare in the toolbox.