1.Black, high, strength, Aluminium, plastic.resistant to solvents, oils greases and other chemical agents,

2.making this knob for using on medical machines, equipment for the food and pharmaceutical industry

3.wherever hygienic, climatic and environmental factors or laws make it mandatory to use corrosion resistant magerials.

4.Different colours, different sizes, luminous appearance neoteric style are its valued advantage special dimension can be made specially .

5.they are used for all kinds of machine tools widely. don't worry about the price and the quality,