This is a yacht-quality fitting from Whitecap Industries, electro-polished to a mirror finish. Single round hole whitecap ss nonlocking backinstallation. Spring loaded latch operates with pull up lift ring and can be opened from inside the closure as well. Includes 1 slam latch, 1 retaining ring & 2 mounting screws, 1 adjustable latch catch. Dimensions: 1.75" outside latch dimension, fits 1.5" diameter hole.