The Master Lock No. 9120EURT Padlock features a 20 mm wide aluminium body for corrosion resistance. For indoor use, the combincation padlock is best used for school locker, gym, travel luggages, suitcase, briefcase, backpacks and more. The 3 mm diameter shackle is 11 mm long and made of steel, offering more strength. Pack of 2 padlocks, 2 keys included. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.