【Yellow Trailer Hitch Lock】Overall dimensions are 6.18 inches in length, 3.15 inches in width, 5.63 inches in height, with a weight of 1.65 pounds 【Heavy-Duty Steel Construction】The lock is made of cast steel, the lock bar surface is chrome-plated, and the lock body surface is powder coated yellow, resistant to corrosion, ensuring durability even in rainy conditions. The lock core is made of aluminum alloy and comes with two keys, one serving as a spare 【Reliable Security】To protect your trailer from theft, this trailer lock features a sturdy 0.5-inch diameter steel lock bar, effectively preventing forced cutting attempts 【UNIVERSAL FIT】The lock's ball diameter is 1.87 inches, with the maximum lockable height inside the shackle being 3.9 inches, and an internal width of 4 inches. The ratchet design is adjustable with 11 locking positions and fits 1-⅞”, 2" and 2-5/16" couplers. Each ratchet tightly engages with the lock body 【Key Management】If you purchase multiple units, locks are NOT keyed alike. If you need additional keys, please message us through market place 【Product Video】Video Instructions link: https://youtu.be/nhSraE8a-Sk. You can also search "15888 hitch lock towing prevention fixturedisplays" on youtube to locate the video. You can also download video by following this link: https://www.fixturedisplays.com/video/15888.AVI