Click definity SIN141PL SIN GANG SINGLE DIMMER PLATE KNOB x1 LOTS MORE AVAILABLE 

Enhance your home or office interiors with the Click Definity BLACK - SIN141PL 1 Gang single dimmer plate and knob.(without Cover Plate). 

With a stylish modular decorative style and a matt black finish, this switch is perfect for both commercial and domestic applications.

This is for one but I have 25 available in total at extra cost.