Returns are costly to small home business, inconvenient, and easily avoided - Please take a few moments to read & view photos - Thank you CollarSafe's 1" Wide Soft "NYLON" Replacement Collars are Thicker and Softer than our "BASIC" Model and now include a HEAVY DUTY PLASTIC SNAP BUCKLE - FITS ONLY Modules that ATTACH to collars by the two PROBES with SPACING approx 1-3/16" on center (see photo) 1 inch WIDTH and adjusts up to 30 inch LENGTH - MOST customers will need to customize (CUT) this collar shorter - PLEASE FOLLOW INCLUDED INSTRUCTIONS - MEASURE the WIDTH of your current collar to ensure you are purchasing the proper 1" WIDTH Due to SAFETY concerns, CollarSafe Collars DO NOT contain a "D" Ring or any METAL at all, as any metal may INTERFERE with RF signals - Leashes are NOT to be used with this type of collar - If you require attachment of dog tags, you will need to find an alternate way of attaching them CollarSafe Collars are Custom Designed and Hand MADE in USA since 2012 – One Human/One Canine Home Based Small Business - Minimal or no retail packaging Custom Designed and Hand Made in the USA by Collar-Safe