HP0887M 6 Pairs HO Scale 1:87 Horn Coupler Hook 17mm E-Z Mate Magnetic Knuckle Couplers with Box Lid Pocket Cover with Screws for Freight Car Trains Railroad (Coupler and Box)

Coupler Size:About 17mm(0.67 inch), Scale:1:87,Suitable for HO scale., Material:metal and plastic., Color:black., Package included:12 pcs hook couplers and 12pcs coupler box and 12pcs screws.