Great Planes Spinner Super Stearman 1.20 ARFTower Stock# LXGDA9 • Manufacturer Stock# GPMA2469
This is the cone that surrounds the propeller.
One 2 1/2" (63mm) aluminum spinner
Installation onto engine with 5/16-20 crankshaft threadsize.
Diameter: 2 1/2" (63mm)
The outer wrapping has a sticker stating this is a .91 size spinner.