Probe Quarto Personal Locker with Mechanical Combination Locking that is re-programmable & can be opened in an emergency with the use of a service key which must be purchased separately. The service key also allows the programmed code to be ascertained if lost. Quartos Steel Lockers can be bolted together in blocks They can link other lockers by acting as linking bridges Vents in the locker door allow the locker to breathe Choose from 6 door colours with a silver grey body: blue, green, red, silver grey, smoke white, & yellow Re-programmable 4 digit mechanical combination lock Please click to purchase Service Key [product