A round cavity door lock set. This version has a round base plate. Brushed finish for fingerprint doors. Made of 304 stainless steel, built to last Round recess door locks are designed to fit most swing door locks, allowing for quick and easy installation. Idea for bathroom, laundry room and closet doors Push button latch with pull ring on both sides for ease of use Allows doors to sit flush with jamb, opening door Latch size (distance from center from the hole to the edge of the door) - 55 mm; Suitable for passage hole (thickness of the door): 35mm to 50mm.