Instant purchase OK. No comments needed. Half choke hardware S size x 2 Size: Chain approx. 145mm Split ring inner diameter approx. 15mm, outer diameter approx. 19.5mm Split ring width 2mm Recommended for small dogs. Recommended for making handmade collars for your dog. Strength proven, measured by a public institution. Although it is a new, unused item, there may be fine scratches due to the nature of the material. Please purchase with understanding.