Serious security for your Shocker Hitch! This 2-pack lock set from InfiniteRule is custom-designed to protect your Shocker Bumper Hitch and trailer from theft. The set includes TWO keyed-alike locks: one for the ball mount of your Shocker Hitch (5/8\ x 4-5/8\ span pin) and one for a standard 3-inch receiver (5/8\ x 3-5/8\ span pin). Both are rigorously tested and rated for a heavy-duty 21,000 lbs, built with machined stainless steel to resist cutting, picking, and breaking. They feature a weatherproof rubber cap and O-ring to keep out dirt, water, and grime. **IMPORTANT:** This set is application-specific and made exclusively for Shocker Hitch Bumper Hitch models (like the Shocker HD 20K, Shocker HD Max Black, Shocker 10K Aluminum, Super Drop, Pintle, and Drawbar models). It is NOT made to fit other hitch brands. Before ordering, double-check your hitch model and the pin dimensions in the photos. Proudly 100% made in the USA by a family-owned business, this set gives you peace of mind so you can focus on your adventure, not worry about your gear.