specification: Item Type: Bike Trailer Coupler_x000D_Material: Carbon Steel_x000D_Scope of Application: Suitable for almost all bikes and trailers Features: 1Usage: Bicycle trailer coupler allows you can connect your trailer to your bike, make you can transport your little ones in safety and comfort. 2High Compatibility: Bicycle trailer coupler has vertical and horizontal holes, which is suitable for almost all bikes and trailers, bringing much convenience. 3Ensure Safety: Bike trailer coupler hitch is equipped with a lockpin, once you install them up, they will not easily fall off, which can ensure your baby's safety. 4Simple Install: Bicycle trailer coupler attachment is easy to install, only you need to do is fix them on the bike, and insert the trailer attachment, then put the pin on. 5Carbon Steel: Bicycle trailer hitch connector made of high quality carbon steel, firm and sturdy, wear resistant and high strength, which can be used for a long time. PackageList: 1 xCoupling Plate 1 xLockpin