Built-in spring loaded plunger, you can just push the door to lock or unlock with push door opener. Eliminates the need for handles or buttons. Create a clean, seamless look with no buttons. Suitable for use with hinges without a self-closing function. Long stroke with magnet: Long stroke with built-in magnet, stronger magnetic force ensure a secure closing point that holds the door closer together and prevents doors from opening. Better adapt this push latch for medium sized doors. Powerful piston / spring: The larger and thicker high-performance spring mechanism is tensioned enough and makes this thrust opener an exceptionally durable and timeless choice. Guarantee a service life of up to 20,000 times. Aluminum case: aluminum alloy case, more durable and durable. Using the adhesive provided, you can install the drawer lock without drilling screw holes. Also come with mounting screws. First assemble the two elliptical holes to adjust the position to the closing. So you don't have to worry if it might be difficult to pinpoint the bracket. Color: silver Size: 85*45*11mm Quantity delivered: 4 pieces