Cox prop question

Fantastic News Bernie!!!!       

This is a very very rare prop that most of us had given up on ever seeing in production again.
The prop was fine tuned by Cox back in the day to help hop up the PEE WEE and TD .020's
That prop was an absolute must for a line of various PEE WEE powered CL planes allowing the development of a whole new world of miniature performance flying planes sold during that time.  Lable its significance when setting up the web page for it.

I too will be buying bulk lot of them for .020 CL and RC planes I have hoarded over 10 Pee Wee's and have 8 TD's. With the advent of the light weight micro RC gear the humble Pee Wee and TD .020 have been back in action! What they had lacked was the right prop specially made for performance flying being flexible and durable enough to last a reasonable amount of ground bashing. This prop will inspire new creations and revive old sluggish flying ones.  

T minus 10 and counting I did a design build for a CL TD .020 racer and had to settle with a 2p prop the 4D x 2.5P should make this one rip. I have only flown it a handful of times waiting to source something with more pitch to handle more wind!

Here's some pics on a few various engines with double tuf blacks. Bernie good idea with competition grey should work great for the reed .049's. and strong enough for the TD's 10% nitro.
If used with the throttle sleeve should get fast crisp throttle response.

Nice Bernie,

I didn't know the 4.5 x 4 was in grey either
I have 6 of the yellow plastic one's great prop and the big brother of the 4 x 2.5 in general shape.

To help us all see the differences here are 3 samples of the listed grey competition props as displayed at this time

Bernie, you said you noted the .049 reed engine does 20k +  with the 4.5x4  
Out of the teflon, copper, crystal clear plastic, stainless steel and mylar reeds which reed material has been shown to helps provide the highest rpm?

Thank you, also let us know when the 4x2.5 props are ready for sale.