The Simplex Mono is a single lever key with a heavy (1.4 kg or more than 3 pounds) gold or palladium plated base and gold plated components. This photo shows the palladium plated base - for a visual impression of the gold plated base and the dust cover, take a look at the Simplex. You can also select a base with a jet-black titanium finish - for a visual impression take a look at the Simplex Professional key. Like our other keys it is manufactured using NC machinery for absolute precision. Micro-threaded screws are used for all adjustments. The pivot uses ball bearings that are imbedded in the base, and the moving components are made of a light-weight alloy.