These props are made with 6mm (.236 inch) prop shaft holes and do not come with shaft adapters. They are intended to be used primarily on glow engines, although they can also be used on electric motors with prop shafts from 6mm to about 10mm. For engines or motors having larger than 6mm shafts, these props will need to have the shaft holes drilled or reamed out as needed.
2 thumbs up!
I use this on my 2-cycle .46 glow engine, wich is mounted on a messerschmitt bf-109. resistant to impact with the ground, and for sure is giving more speed than the master 11x6.
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1 thumbs up!
Good value but needed a significant amount filing off to make the prop balance.