Knuckle Coupler short shank 17mm with pocket - HO scale - 3 Foot 6 Models

Specifications: Scale: 1:87 Material:Plastic coupler and metal air hose and Plastic Coupler Box and Lid and metal screws. The Screws are M2.3 6. Package included: 12pcs Couplers and 12pcs Coupler Pocket with Cover and 12pcs Screws.