Company introduces an exciting no cost, additional option to its already extensive range of push on and collet control knobs. In meeting changing industry needs, Selco offers the UV and Phosphorescent line option. As implied in the name, the UV Fluorescent 'glows" under UV light, and the Phosphorescent, once charged by either daylight or artificial light, can be seen under dark conditions for a length of time proportional to the amount of charge it has received. The UV Fluorescent and Phosphorescent options can be incorporated in the white indicator line on all two-shot push-on and two-shot collet knobs irrespective of whether the outer body is hard or soft touch material. This is achieved by the addition of an additive in the first shot molding which incorporates the indicator line. The standard body color is black. However, as with all Selco control knobs, an alternative selection of colors is available on request.