I designed this Timing Degree Wheel specifically for porting chainsaws because I couldn't find one on the market I liked. Although I designed it for chainsaws it should fit just about anything you need to check or adjust timing on. I prefer green on black because its very clear and easy to see. I can also do custom colors and/or custom lettering. These are 3D printed out of PLA at 15% infill to try and make them as cheap as possible but other materials or infill could be arranged. For customization message me before your purchase.