Concave Lock / Door Lock

It’s always a bothersome thing to match the key to the keyhole to open the door when you go home in the dark. Concave Lock is redesigned for this problem. First, Concave Lock will be lit by an annulus device with fluorescent material in the dark. In addition, there is a concave surface on the lock so that the key can slide into the key hole; it’s easier to match the key and lock.