Push to open: Built-in spring plunger, you can use the soft-close pad to lock or unlock by simply pushing the door. No handle or button is required. Create a clear and transparent appearance without buttons. Suitable for hinges without self-closing function. Long-term maintenance of magnetic force: The built-in magnet can extend the stroke, and the magnetic force ensures a secure closing point, making the door easier to weld and no longer "floating" the door. Make this push bolt more suitable for medium-sized doors. Piston, powerful spring: The larger and thicker heavy-duty spring mechanism has enough tension to make this bottle opener an extremely durable and timeless choice. Ensure that the service life is up to 20,000 times. Easy to install: You can install ultra-thin strikers without drilling holes in the screw holes with the provided adhesive. It is also equipped with impact screws. Fix two screws in the bottom bracket. The tip of the magnet can be adjusted to 3mm, so you don't have to worry about the difficulty of positioning the bracket. You will get: 20 magnetic door lifters; 40 foundation mounting screws; 20 flat head screws; 20 anchor points; 20 ultra-thin adhesive knives (Warm tip: for exterior doors, must be installed during installation A compression stroke of 3mm is retained.) Quantity delivered: 20 sets of silver.