This padlock lets you set your own combination and can be reset to any personally programmed 4-digit combination with the exclusive, positive action change key that permits quick, easy resetting whenever the owner chooses. Has around 10,000 possible settings and features a corrosion resistant, solid brass case with a 5/16 inch thick nickel plated, case hardened, steel shackle. Also has double locking shackle legs. Once the shackle is closed the automatic tamper guard of hardened steel blocks keyway and protects against tampering. Limited Lifetime Guarantee. Dimensions: 2 inch and 1inch shackle height x 5/16 inch shackle diameter. 1 per package.