Replacement knob for OEM brand Air Conditioning (AC) Manifold gauges

I have a set of automotive AC manifold gauges for vacuuming and charging car and truck air conditioning systems. I broke one of the knobs on the valve body so I modeled a replacement. These are the type you can borrow from O'Reilly or probably also available on Amazon. The knobs are blue and red but I suppose you could print in any color you wanted.