The High-Mount Tire Carrier has all the features: heavy-duty steel construction with nickel plating, a lock tab for optional padlock and an offset design that fits all boat trailers. Holds tires up to 16" with 4, 5 and 6-hole bolt patterns with a lug distance between 4.5" and 5" on center. 6-hole patterns will only utilize two lugs on the spare tire carrier. Included hardware kit fits both 3" and 4" trailer frames. 5" trailer frames require Extreme Max hardware kit 3001.0077. Not intended for applications where the trailer will be in contact with saltwater or brackish water. Stud Size: 1/2-20 x 45. Includes a no-hassle two-year replacement warranty.