Perko Flush LockMade of white polymer, with a stainless steel "D" ring handle, stem, and lock nut. Includes 2 keys and gasket, and 2 O-Rings for increased water resistance. It has position indicators to show open or closed position. Easily installs in a 2-3/8" diameter hole, on mounting surfaces 3/8" - 7/8" thick. Includes straight cam bar and flexible polymer strike.Specifications: Face plate dimensions: 2-7/8" x 2-7/8"; Fits in hole with diameter 2-3/8"; For mounting surfaces 3/8" - 7/8"; Click here for Perko Flush Lock installation instructions.