Description:The bike trailer coupler is made of metal with coating, precision welding technology makes them sturdy and durable, they are not easy to break, rust or corrode, suitable for long-term use.The bike trailer coupler is equipped with a connecting pin, which is hard to get open after you finish the installation, the hitch coupler is not easy to fall off.the bike metal attachment connector accessory is easy to install and can be applied to bike, suitable for daily use and family tour use.Please check carefully before purchasing.Specification:Material: MetalColor: Black, Silver ToneBicycle Trailer Coupler Size: 89x29x52mm / 3.50"x1.14"x2.05"(L*W*H)Lock Ring Size: 58x52x17mm / 2.28"x2.05"x0.67"(L*W*H)Hole Diameter 1: 23mm / 0.91"(D)Hole Diameter 2: 10mm / 0.39"(D)Hole Diameter 3: 7mm / 0.28"(D)Diameter 1: 17mm / 0.
