Features:

No drilling tools needed, you can have these locks ready to go in as little as a minute! Although we recommend waiting 24 hours before using, it is durable for lasting work.

Built in stainless steel spring, Double buttons need to be pressed simultaneously for working conditions which is easy to be done for adult but kids can't finish it for two buttons.

Each lock with strong 3m adhesive tape, so 3.3x3.2 inch tape causes locks difficultly pulled off from sliding glass door or gliding window.

Package include:

4 x Child Window Door Lock