Description This Trailer Hardware Kit BIN002 is used to attach single wheel cargo trailers such as the Bakcou and QuietKat trailers based on the BOB trailer design. Combined with our BOB trailer axle you will have a secure a reliable fit between your bike and your cargo. Be confident and ready for rugged terrain and any load you want to haul. TRAILER HARDWARE KIT BIN002 SPECS For use with Robert Axle Project BOB Trailer axles. This hardware kit includes: M5 Split Washer (x2), Flat Washer (x2), and M5 Bolt (x2). This kit does not include the thru axle.