"Our Premium Tamper-Resistant Winch Lock replaces the 1/2" bolt with a custom bolt that requires a special tool to remove (included in kit). The bolt is protected by a tapered head to prevent someone from attempting to remove the bolt. The special tool must be inserted from the top. Much like custom lug nut locks, we offer many variations to avoid commonality of tools. High quality construction machined from solid stainless steel. Design is the most tamper resistant on the market. Available in 6mm for TJs (1997-06). Functional yet attractive and does not take away from the appearance of your vehicle. Quality: Our winch lock are machined from solid stainless steel. Ours cannot be crushed. Tamper-Resistant: Our unique design requires a special, precision-machined tool that is not easily duplicated. In addition, we offer many variations so the chance of someone having your tool is very remote. Convenient and Easy to Install: To install the Winch Keeper, one must only remove the existing bolt on one side. Simply replace the bolt with the Winch Keeper using the special tool provided, thread the bolt onto the frame of the vehicle through the winch plate. Use a 5/8 inch socket. Attractive: When installed, our Winch Keeper is very compact and hardly noticeable. The stainless steel finish blends well. Many of the other Jeep winch locks on the market are bulky and ugly."