JXF 12x6 / 305 x 153mm Poly Composite propeller

 CHAMP-RC 1051 points

First is length of the prop and second is the width of the prop

 chopper50 259 points

Hi i think you will find the second number means the degree or pitch the 6 means 6inches to every revolution

 Strussen 208 points

It shows the lenght in inch, and the pitch in inch.

 solentlife 117 points

As supplied is 5mm ID.

It has a centre boss that can be drilled out to suit larger shafts easily. But suggest using a Prop reamer or a fixed Pillar Drill. Trying to do by hand drill is difficult to get hole centred and straight.

Mine are drilled out to fit RCGF 15cc gasoline engine shaft of 8mm (from memory !).
That's putting over 2HP through it and fine.

Good economic prop, with minimum flex .. reasonably balanced out of pack.

 Smajly 53 points

I use them on electric

 SZannis 18 points

These must be for glow engines not electric!

 cristian 3 points

are for good purposes, but reeds electric, a little heavy

 Franc 5 points

I use them on glow. No problems.

 sparkie 325 points

They are in stock now!

 SZannis 18 points

They are in stock. I have used such props. They are excellent. I have also tested them on my magnetic prop balancer and they are very well balanced. No trimming required at all.