Here is a knob that'll help you in your interface design. It's full layered & comes in 3 states so that you have also the interaction designed... Oh and... you can use it as an interface piece OR as an icon...
- How do I contact support?
If you need help with a product contact the shop owner here on the product page! Just click the Message icon on the upper right.
For anything else shoot an email to firstname.lastname@example.org