CollarSafe 1 inch Wide Replacement Collar - Fits Most (not All) modules requiring Holes - for Your Dog's PetSafe & Other Brands, Wireless Containment, Electric Fence, Training/bark Systems CollarSafe's Thicker 1" Wide Replacement Collar adjusts up to 30 inch length (easily customizable shorter, see included instructions) One of CollarSafe's Thicker Collars made with Soft Polypropylene Webbing - approx. 2.02mm thick - 1500 lbs tensile strength UV, Water & Stain Resistant Six Beautiful Color Choices - Your choice of Hole Spacing Made in the USA - Eco-Friendly features minimal retail packaging