The Simplex Professional is a variation of our Simplex paddle, and it has the same technical characteristics that have made the Simplex very popular with operators of all skills. The Simplex Professional has a black base with a titanium nitrade finish. Several other components are gold plated. The red finger pieces provide a stunning contrast to the jet-black titanium nitrate finish, as seen in the photos. Like our other keys it is manufactured using NC machinery for absolute precision. Micro-threaded screws are used for all adjustments. The arms are held by 4 ball bearings that are imbedded in the base, and they are made of a light-weight alloy that provides very low moving mass - this allows excellent responsiveness at high speeds even when set for a very light touch. The contacts are 925/000 silver. The key comes with a protective dust cover.