SIMPLE ONE-HAND OPERATION. You can open this lock with just 2 fingers. Just press the release button on both sides and rotate the lever up. Both men and women can open and close the lock effortlessly with just one hand. THE RUGGED ABS CONSTRUCTION makes this lock a permanent security accessory. This one has a sturdy hinge mechanism that sinks smoothly while resisting damage or breakage. Get several of these sets of 6 to keep your child safe at home. SUPER EASY TO INSTALL. Simply glue your door with the supplied 3M adhesive backing. Holds strong with a very solid grip. So let's go when you're ready to remove the lock. No tools required. It is not necessary to drill holes. Installation only takes a few seconds. SUITABLE FOR EVERYONE - This lever lock is compatible with most standard lever handles as long as they can be rotated 120 °. Adding a two-sided button to control standby mode will prevent your kids from locking you out. If you are not satisfied with our product, please contact us directly so that we can help you. Product Description: Why choose us - Made of tough and durable ABS plastic -3M adhesive back holds firmly -No tools or drilling required -Super easy installation in seconds - Adults can be easily opened with one hand