Tri-Wing 1.25" Hardware for Kennels is designed specifically to use with Petco Classic Large Dog Kennels, Petco Premium 500-800 Series, Petmate® Pet Porter® II, Petmate Ultra Vari Kennel®, Petmate Sky Kennel®, RuffMaxx® Kennels sizes 28"- 40", and all RuffMaxx Camo Kennels. To ensure a proper fit match your pet's kennel size and name with the list above. Each package contains twelve screws and wing nuts.