These props have been popular in Europe for a while but not available in the USA in F3A sizes.
Sample weights:
20-13 2.4oz
20-15 2.2oz
21-14 2.6oz

First pic (no flash) does not show the CF weave detail -2nd pic shows the detail.
The balance pic is the first one I pulled from the box and put on the balancer, so they are very close right from the factory.

Available sizes:
20-12
20-13
20-15
21-12W
21-13
21-14
22-12