This is the Prop and Spinner Set for the Cox Models Extra 300 EP 2.4GHz RTF.
FEATURES: Black nylon propellor
White foam spinner
Break away (pop-off) design
INCLUDES: One prop and spinner assembly
REQUIRES: Installation on to motor shaft
SPECS: Prop Diameter: 4.25" (107.95mm)
Spinner Diameter: 0.87" (22mm)
Spinner Height: 1.04" (26.5mm) without mounting piece
COMMENTS: SafeProp design: a nose in crash usually means damage, even if it is
only to the prop. But SafeProp helps prevent damage. SafeProp
popr off on impact, protecting itself and the rest of the plane
from damage, and you can pop it right back on again.