Whether you are a professional artist or just like playing around with arts and crafts, we have best of arts & crafts. We are committed to bringing newest and trendy products to make it easy and more pleasurable for you. High quality products. Performance and reliability. Wide variety of products to find what you want. Attractive designs, colors and patterns. Features Coil springs are molded as an integral part of the coupler Patent pending spring retainers Easy installation and operation Fits most ho scale cars with built-in draft gear boxes Compatible with all magnetically operated knuckle couplers 25 pair Specifications Size: Medium