Perko flush lock with white polymer body, chrome-plated zinc alloy "T" handle, and stainless steel stem is designed for long-lasting corrosion resistance. T handle drops down flush in either the open or closed position. Rubber seal and boot underneath the T handle seals the lock cylinder to prevent water intrusion. Easily installs in a 2-1/2" diameter hole for mounting surfaces 1/8" to 3/4" thick. 3" face plate diameter. Comes with two keys.