This is a 3.5cm wide leather collar for small dogs. This is a one-of-a-kind finished product (sample) and is a bargain. If you want a different size, please order from Yahoo! Shopping. If it's not available, please contact us. ● Size: Leather width: 3.5cm Thickness: approx. 3mm Neck circumference: 23cm **Please be sure to measure your dog's neck circumference before ordering (size with enough room for one finger). Holes are: ● 23 ● ● ● (1.2cm intervals) Please confirm. **Measure from the edge of the leather (not from the edge of the buckle金具). (The leather is inserted on the inside, so it is made slightly larger than the numerical value.) +++++++About Extra+Heavy+++++++ We have many other items for sale, so please take a look. Extra+Heavy is a handmade collar shop that specializes in custom-made collars, including half-choke collars and leads, mainly for bulky collars for bull breeds and collars for dogs with long necks, such as Italian Greyhounds. Our sites are Rakuten Shop, Yahoo! Shop, and our main store. *Search for "collar studs" on Rakuten Shop or Yahoo! Shopping Mall to find Extra Heavy.