Padlock for RoofBag Soft Car Top Carriers Hardened steel shackle protects padlock against cutting. Solid brass body and mechanism, makes this padlock rustproof, so it will never jam because of rust build-up. 3 keys make it very unlikely that you won't be able to open the padlock because of lost keys. Dimensions:26mm H x 29mm W | Thickness:10.5mm | Shackle: 4.5mm