Description:Portable DesignThere are vertical and horizontal holes on the trailer connector, so whether your bicycle trailer connector hole is vertical or horizontal, it will fit you perfectly.Family FunWith the extra trailer connector attachment, both mom and dad& 039;s bikes can be equipped with a trailer trailer, your kids will enjoy riding the bike.Safety GuaranteeThe bicycle trailer hitch attachment is equipped with connecting pins, it is difficult to open after installation, and the hook connector is not easy to fall off, ensuring the safety of babies and pets.Sturdy MaterialBaby bike trailer accessories are made of steel with black coating, precision welding technology makes it sturdy and durable, not easy to break or corrode, suitable for long-term use.Easy To installBicycle metal attachment connector accessories are easy to install, can be applied to instep bicycles, pet strollers, etc., suitable for daily use and family travel, bringing a lot of convenience to your travel.Specification:Material: steelColor: blackSize(approx.): (outer diameter x inside diameter)upper circle 2.03 x 1.27cm/0.8 x 0.5inchunder circle 3.17 x 2.54cm/1.25 x 1inchPackage Included:1 PC x Bike CouplerNote:1.Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2.Please allow 1-2 cm differences due to manual measurement.