Description If you are looking for a professional and affordable bike trailer coupler, then your research is over here. That’s because our product can meet your need. Adopted of premium material, it is practical and durable. Great for connecting the parent’s bike with kids' trailers. It provides excellent stability and is compatible with multiple bikes on the market. Features - Brand: VILLCASE. - Color: Black. - Material: Steel. - Size: About 5.50X5.00X3.00cm/2.16X1.97X1.18inch. - Made of steel with fine workmanship, it is practical and durable. - Easy to release or attach the bike trailer coupler attachment to bike rear wheel. - You can get the coupler ready in seconds by just removing/tightening one nut. - Strong and solid, not easy to deform or fall off, ensuring your babies safety. - Great for connecting the parent’s bike with kids' trailers, pet trailers, cargo trailers, etc. Made of steel with fine workmanship, it is practical and durable. Easy to release or attach the bike trailer coupler attachment to bike rear wheel. You can get the coupler ready in seconds by just removing/tightening one nut. Strong and solid, not easy to deform or fall off, ensuring your babies safety. Great for connecting the parent’s bike with kids' trailers, pet trailers, cargo trailers, etc.