Key resor application: for indoor and outdoor use; storage of keys, chip and plastic cards; flexible bracket attachment User-friendliness: key box with number code via push buttons; personally adjustable number combination Durable design: made of robust steel to provide protection against break-up attempts and saw tools. The double lock provides higher resistance to pry attempts Easy sharing of your keys: great solution also for AirBNB and house rentals; allow safe access to your home (e.g. for caregivers or craftsmen) Flexible design: the hanger can be attached to doors, barriers, thin posts or fences; perfect solution when no wall mounting is possible Dimensions and box contents: outer dimensions (H x W x D): 17.5 x 7.9 x 5.2 cm; inner dimensions (H x W x D): 8.5 x 6.1 x 1.5 cm; weight: 750 g LIFETIME LIMITED WARRANTY: If this product or product part fails to meet its intended use due to a defect in material or workmanship during its product life, Master Lock will repair or replace the product or product part at its own choice free of charge 100 YEARS Since 1921, Master Lock has been producing safety products in the USA. With our expertise and innovation, we bring our products up to the latest technology. The #1 from the USA sells padlocks, safes and much more worldwide for home and professional users, Weight: 1.653466965 pounds, Manufacturer: Master Lock