This is yet another product produced by
Gary Byk and the crew at Red Roo Models.
The standard propellor
used by the P-51D was the 'cuffed' Hamilton standard propellor,
the Mustang's used by Australia
had the 'cuffless' Aeroproducts blades for the Dallas
manufactured P-51D/K or the DHA paddle blades
for CAC manufactured aircraft (or combination thereof).
The blades as represented here are for the
CAC Mustang produced in Australia in the later part of WWII
and post war. It will pay to check the references as to exactly
which blades were being used by the aircraft you are modelling.
For an example of this is Page 104 of the Stewart Wilson
'Spitfire, Kittyhawk and Mustang' which shows two different
CAC aircraft with two different types of blades.
problem with the blades is the light indent just in from
the tip of the blades that I assume is a guide for the painting
of the yellow tips, if painted using thinned paint it would
show through. The blades would require a slight amount of
cleanup as the have a small amount of flash along the edge
of the blades, this would only take a minute or two to clean