Tecnodin manufactures an wide range of plastic knobs available in different materials such as duroplast and thermoplastic. We have versions of our Products with a threaded bushing, threaded stud, direct thread, or with a plain hole for custom threading. We also manufacture the Products in other colors which helps to distinguish different functions in the same project. If you cannot find the product you need, do not hesitate to contact us and we will find a solution for you.