Ken, you might want to mention this is for an electric set up. My guess you are looking for the Igor 12X5N 3 bladed prop.
Try eliminator props.
Eliminator 12 x 4.25 three blade carbon is 30 grams
Is that prop for electric or for IC?
I have been convinced that I need to up my game to CF props. If anyone has an excess of 12-5 Tractor CF props that they are willing to part with at an appropriate price I am in the market for some.Ken