【Universal Compatibility】 Fits All Thule Products, These lock cores are designed to work seamlessly with Thule bike racks, roof racks, ski racks, cargo boxes, cross bars, towers, kayak racks, and more. No need to worry about mismatched keys—Thule uses the same lock cylinder system across its product line! 【Premium Durability】The outer cylinder is crafted from corrosion-resistant aluminum alloy, while the inner core is made of long-lasting brass for smooth operation. Resistant to wear, rust, and harsh weather. Pro Tip: If used near saltwater, apply silicone spray to maintain optimal performance. 【Enhanced Security】Prevent Theft & Damage, Worn or rusted lock cylinders compromise security. Replace them with these high-security cores to keep your gear safe. Install these cores across multiple Thule products (bike racks, roof boxes, etc.) and use just one key for everything. 【Quick & Easy Installation】No Tools Needed, Simply unlock your existing core, use the included master key to remove it, and pop in the new cylinder, done in seconds! 【Complete Package 】Includes 4 lock cores, 2 keys, and 1 universal master key for easy installation and replacement. Buying this 4-pack is far cheaper than replacing individual locks through Thule or a locksmith., Manufacturer: bowarepro