Description This product is anemergency release lock. It is made of solid materials. It is safe and durable. It can serve you for a long time without being easily damaged. It is an excellent emergency release lock that can bring you more convenience, allowing you to have a more comfortable experience. Features - Color: Silver -Material:Steel wire, metal - Size: 14.00X10.00X4.00cm/5.50X3.93X1.57in - This door lock allows manual opening of the garage door in the event of a power failure or other opener failure. - This garage door emergency release lock is universally compatible with most brands of garage door openers. - Made of die-cast construction, brushed steel wire and metal for durability. - Widely used in bank, hotel, store, school, home, mall, and etc. - Simple installation, easy to use for beginner or professional, allow you to use in an orderly and stable way. Package list: 1 x quick release lock 4 x keys