The Robert Axle Project Bob Trailer Thru Axle is the easy way to adapt your axle to suit a BOB trailer, available for almost any bike! Bob trailers enduring popularity continues, and we love the continued support of these trailers from Robert Axle. Making axle’s that ensure any bike can carry a trailer is just about the best thing since sliced bread. You won’t need to get a completely different bike to cart your cargo or kiddo’s or pets around town. Robert Axle have made it so you will be able to convert any bike into a cargo carrying machine. There is no need for additional accessories, no need to change bikes. Grabbing yourself a BOB axle for your bike will give you the flexibility to simply hook it on & go. And we see many people grab an axle for all their bikes for maximum flexibility. Riding anywhere with anything is a motto we get behind!