Made from iron materials, this bike trailer coupler provides 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:Black -Material:Iron -Size:8.30X5.50X2.86cm/3.26X2.16X1.12in -Manufactured with reliable iron material, it is strong and durable for your long time use. -Easy to install, can be applied to bicycles, children's trailers, pet carrier, etc., suitable for daily use and family travel, bringing a lot of convenience to your travel. -Good workmanship and sturdy materials ensure a and perfect details. -The bike trailer hook attachment is equipped with a connecting pin, which is difficult to open after installation, and the hook is not easy to fall off, ensuring the safety of babies and pets. -The bike trailer hitch attachment is heavy duty, strong and durable, and hard to damage. Package list: 2 x Bike Trailer Hitches with Buckles