Safety 1st Secure Mount Deadbolt Lock Secure Mount Deadbolt Lock helps keep your child safely inside. This easy-to-install lock requires no drilling or adhesives and leaves your door with no marring after removal. The simple installation takes just 3-steps, making it easy for parents to prevent children from opening doors with deadbolt locks. Installs behind the existing deadbolt hardware Non-marring design is easily removed when no longer needed Dual-action system is intuitive for parents, not for children Quick glance at clear panel confirms door is locked High impact plastic construction for a long lasting, durable product. Features Fits deadbolts less than 2-1/6" wide that protrude less than 1" from the door Keeps child from opening a deadbolt lock No adhesives or drilling required No permanent damage to the door Fits most door locks (not all) USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.