CollarSafe 1 Inch Wide Basic Replacement Collar - Fits Most (not All) modules requiring Holes - for PetSafe & Other Brands, Wireless, Electric Fence, Training/Bark Systems CollarSafe's Basic 1" Wide Replacement Collar adjusts up to 30 inch length (easily customizable shorter, see included instructions) TWO Adjustment buckles keep collar TIGHT!!! These are NOT traditional dog collars and do NOT have "D" rings or any metal which may interfere with RF signals UV, Water & Stain Resistant Polypropylene Webbing - approx. 1.68mm thick - 900 lbs tensile strength Custom Designed and Made in USA by CollarSafe - Eco-Friendly features minimal retail packaging