2 3/4" (70MM) WIDE SET YOUR OWN COMBINATION PORTABMaster Lock No. 5406d Compact Key Safe Holds 1 2 House Or Car Keys. It Has A Resettable Combination Lock That Let You Select An Easy to remenmber 3 digit Combination Number. It's Solid Die Cast Body Is Designed To Withstand Hammering And Sawing And Mounts Over The Door Knob For Convenience. The Shutter Door Protects The Combination Dials From Weather Dirt And Grime So The Result Is Rust free Performance And Long Life. The Master Lock 5401d Is Backed