Description iron materials, this bike trailer coupler provides good performance with increased toughness and durability. Easy to install but not easy to fall off. Heavy duty, not easy to crack. With this bike trailer coupler attachment, the parent’s bike can be connected to the kids' trailers. When your kid is tired of riding, you can tie him next to your bike. Features -Color:As Shown -Material:Iron -Size:8.30X5.50X2.86cm/3.26X2.16X1.12in -This hitch is made of iron material, with high impact resistance and toughness, so that the service life is longer. -It is simple to release or attach the bike trailer coupler accessory to the bike rear wheel assembly. -Good craftsmanship, thick and strong can ensure not easy to break, has good wear resistance, and can be used for a long time. -The replacement coupler can be used as a convenient hook for connecting the bike trailer to the bikes rear axle. -If you want get some outdoor fun with your kids or pets, this product can be the good choice. This hitch is made of iron material, with high impact resistance and toughness, so that the service life is longer. It is simple to release or attach the bike trailer coupler accessory to the bike rear wheel assembly. Good craftsmanship, thick and strong can ensure not easy to break, has good wear resistance, and can be used for a long time. The replacement coupler can be used as a convenient hook for connecting the bike trailer to the bikes rear axle. If you want get some outdoor fun with your kids or pets, this product can be the good choice.