Well made but prop cut outs are rough, had to file these smooth to protect prop from damage. Fits the Master Airscrew 12*8*3 prop perfectly with good clearance. Running this on an ASP FS91AR, the back plate & prop nut fit perfectly.perfect for the HK FW190 1400MM the standered Prop Fits the three holes on the spinner with no cutting,rubbing,just straight over them no problem...... THE SHAFT IS 4MM ON THE PLANE
THE SPINNER BACKPLATE IS FOR A 6MM SHAFT.SO there,s abit of drilling and tapping it looks beautiful on the FWulfe.it is made of alloy and has a good finish..I bought this spinner to use on my PZ Spitfire. The centering insert for the back plate fits precisely over the PZ prop adapters. Plural because the Spitfire and the Bf-109 adapters are the same save for different length prop nuts. This spinner WILL easily replace the Spitfire plastic spinner AND the PZ Bf-109 3 blade prop fits this spinner as well. Notice that NO adapter is provided with this. Only the nut. That nut will fit the E-Flite collet (8 X 1.25 mm) if you are using that. Otherwise just use the PZ adapter (Spit or Bf-109) - both prop nuts will fit under the cone too! Nice well made product!This spinner is machined well, but it wasn't deburred and some of the parts were pretty sharp. I bought it to fit an EMP 12x8 3-blade prop but the cutouts were not large enough to clear the prop. I used a deburring tool to enlarge the cutouts and everything fits well. Overall it's great for the price, but required 30 minutes of tuning to make it right.fantastic quality! good buy, higly recommended.It's perfect fit with my master airscrew 12X8 propIt's perfect fit with my master airscrew 12X8 prop.