A 4" wide cut collar constructed of extremely durable biothane, offering the ultimate level of cut protection available in any cut collar on the market. Buckles and d-ring are 100% stainless steel making this the last cut collar you will ever have to buy your hog dog. This 2 ply collar offers a high level of protection with less flexibility. Best suited for use on large bodied catch dogs. These are the neck sizes the collars fit: Medium 17-23" Large 19-25" Xlarge 21-27"