CollarSafe &ldquo;Metal Buckle&rdquo; 1 inch Wide Replacement Collars - Fits Most (not All) modules requiring Holes PetSafe & Others, Wireless Containment, Electric Fence, Training, bark Systems CollarSafe Metal Buckle old style Replacement Collars are thicker than our Basic Replacement Collars and made with a soft polypropylene webbing approximately 2.02mm thick  1500 lbs tensile strength  UV, water & stain resistant FITS most (not all) receiver module that require two holes (spaced 1-3/16 on center) to hold module onto collar. (Please measure your current collars hole spacing and SEE PHOTOS). FITS models: PIF-275, PUL-275, PRF-275, UL-275, UL-275BM, UL-275D, UF-275V, UL-250, PUL-250, PIF-275-19, PRF-275-19, Prolite, Microlite, (will NOT fit R21, R22 or R51) These are NOT traditional dog collars and do NOT have "D" RINGS. 1 inch width and adjusts up to 30 inch length (easily customized shorter by customer, instructions included). NOTE: Due to the HEAVY metal buckle, this collar may NOT be suitable for smaller dogs. These old style Metal Buckle Replacement Collars are handmade, they are not perfect, pretty or fancy, but I offer them as I've had requests for "metal buckle collars that fit the petsafe receiver modules. Custom Designed and MADE in USA by Collar-Safe (minimal or no retail packaging) - ALL items ship same/next business day FREE First Class USPS with tracking - NO Minimum Purchase Requirements (Priority upgrade available upon checkout)