The Invincible Marine BR59104 ½-inch U-Bolt Steel Spare Tire Carrier secures tires on the tongue or frame from 3-inches to 5-inches (W). This carrier easily installs, securing most tires, and fit sizes 8-inches to 15-inches. The frame also includes two lug nuts, and is made of a durable corrosion resistant steel. This product is simple, compact and economical, and offers unrivaled protection and safety. Whether you"re outfitting your boat for the first time, or replacing well-worn nautical parts, this product is an essential accessory for your boating and domestic needs, and is perfect for nautical journeys and mechanical maintenance. Precision and reliability are the marks of quality that this product has proven time and time again, guaranteeing steadfast performance with each use. The Invincible Marine BR59104 ½-inch U-Bolt Steel Spare Tire Carrier comes with a 1-year limited warranty and protects against manufacturing and workmanship defects. Rugged, tough and reliable, Invincible Marine is well-known for their hardworking nautical line. For freshwater and saltwater boating, Invincible Marine designs products for avid fishermen and weekend boaters. Quality, utility and innovation go into every Invincible Marine product giving you more time on the water.