Wide leather collar for long-necked dogs like Whippets. 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. ● Size: Leather width 4cm Thickness approx. 4mm Neck circumference 30cm **Please measure your dog's neck circumference before ordering (size with enough room for one finger).** Holes are: ● ● 30 ● ● ● (1.2cm intervals) Please confirm this. **Measure from the edge of the leather (not from the edge of the buckle hardware).** ++++++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 bully breeds and long-necked dogs like Italian Greyhounds. Our sites are Rakuten Shop, Yahoo! Shop, and our main store. *You can find Extra+Heavy by searching "collar studs" on Rakuten Shop and Yahoo! Shopping Mall.