This Kadee Coupler Assembly Fixture is a must - have for assembling #4, 5, 9 & 58 HO scale couplers. It's a super - useful tool that clamps the coupler in the draft gear box. With it, you can easily insert the centering spring and attach the lid, making the assembly process a breeze.

Using this Kadee coupler assembly jig is easy. First, place the #4, 5, 9, or 58 HO scale coupler in the draft gear box and use the jig to clamp it firmly. Then, insert the centering spring without any hassle. After that, attach the lid easily. When using, make sure the coupler is properly placed in the jig to avoid any misalignment. For maintenance, keep it clean and dry. You can use a soft cloth to wipe it down regularly. If there's any rust, use a gentle rust remover. Store it in a dry place to prolong its lifespan.