Studded collar for medium-sized dogs. There's a slight stitching error, but it's hidden by the studs, so I don't think it'll be noticeable. This is a one-of-a-kind finished product. If you want a different size or color, please order from Rakuten or Yahoo! Shopping. ● Size: Leather width: 3cm Thickness: approx. 4mm Neck circumference: 41cm **Please be sure to measure your dog's neck circumference before ordering (a size with about one finger's worth of room). Holes are: ● ● 41 ● ● ● (1.2cm intervals) Please confirm. **Measure from the edge of the leather (not from the edge of the buckle hardware). +++++++About Extra+Heavy+++++++ Extra+Heavy is a handmade collar shop that specializes in custom-sized collars, mainly for bulky collars for breeds like Bulldogs and long-necked dogs like Italian Greyhounds, as well as half-choke collars and leashes. The sites are Rakuten Shop, Yahoo! Shop, and the main store. *You can find Extra Heavy by searching "collar studs" on Rakuten Shop or Yahoo! Shopping Mall.