This is a 2.5cm 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: 2.5cm Thickness: approx. 3mm Neck circumference: 24cm **Please be sure to measure your dog's neck circumference before ordering (size with enough room for one finger). Holes are: ● 24 ● ● ● (1.2cm intervals) (Actually, leather is inserted on the inside, so we make it slightly larger considering the difference in inner circumference.) Please confirm. **Measure from the edge of the leather (not from the edge of the buckle金具). (The size is made slightly larger than the numerical value because leather is inserted on the inside.) +++++++About Extra+Heavy+++++++ Extra+Heavy is a handmade collar shop that specializes in custom-made collars, half-choke collars, and leads, mainly for bulky collars for bull breeds and long-necked dogs like Italian Greyhounds. The sites are Rakuten Shop, Yahoo! Shop, and the main store. * You can find Extra Heavy by searching for "collar studs" on Rakuten Shop and Yahoo! Shopping Mall.