Convenient: Portable padlock key box allows you to hang it anywhere easily including doorknob, metal fence, railing, and pipe, no tools needed. Keep a spare key handy and never nerve to lock yourself out. The key box is perfect for daily outdoor sports, friends, relatives and latchkey kids, home sevices at given time, emergency entry, real estate business and so on. High Security: Resettable 4 digit combination lock box allows you to set your own combo code with 10000 unique choices which you know it is secure. High strength zinc alloy body and hardened steel shackles, offer extra resistance to cutting and sawing. Easy Operation: It's easy to set the 4-digit combiantion. Removable shackle allows your to hang it anywhere temporarily or mount it to wall permenantly. Instructions are always included. Large Capacity: The key storage box comes with large internal space holding up to 5 keys. You can also alter to store credit card, USB thumb drive and so on. Inner dimension: 3.54in x 2.64in x 1.38in (L*W*H). Exquisite Design: Portable door key box fits most ball, biscuit, and tulip door knob styles; removable shackle for two-way installation, and rubber coated to prevent scratching; sliding shutter door to hide as well as protect combination dials from weather; sturdy metal body construction for durability; environmental protection paint is non-corrosive and rust-resistant.