very useful, The mounting holes on them are a little small to fit in my motor shaftI currently have these set up on a 350 QX3 with carbon fiber 8x5.5 props and it is great. Nice little upgrade for better props. less vibrations, quieter and more stable flight.great adapter didnt use to the 350 but use 2 sets on some t shape propellers and they look great and balanced thanks hkThese plus the carbon fibre props are totally worth the 5 stars. I was surprised with how much quieter AND lighter they are compared to their plastic counter parts.good product , I used it on 350qx and 8055 cf prop. good resualtCEMONTE PARFAITEMENT AVEC LES HELICES CARBONNE HOBBYKINGPlug n Play mod, looks great, had zero problem with props (PRODUCT ID: 505000001-0 ) in fact the centre boss was a good firm fit.
IMO this adapter and carbon are great, if using nylon props the standard ones are good enough, these are simply cool looking.
I save the std props for ACRO mode, and spare bodies and .......... ;-0Great item. Highly recommended. Be prepared to do some mods. Not on this but the propellers. The mounting holes on them are a little small for the screws included so be prepared to get your rotary tool to make the holes a little bigger. Not much of a fuss.