This is Du-Bro's 7mm x 1 Aluminum Spinner Prop Nut.
FEATURES: Plain silver aluminum spinner.
Meets AMA safety specs.
CNC machined from 6061 T6 aluminum.
Works with standard electric starting cones.
This will fit the following engine models:
Enya- .35, .40, .40X, .40CX, .49X, .45, .45CX,
GP.45CX, .50CX, .60XFIII, GP.60XF-4, GP.60XF-4H,
.60XLF, GP.60XLF-4, .60 4S, .80 4S, .90 4S, 120 4S
Saito- .40-.60 4S, .65-.90 4S, .56 4S
SPECS: Approx. Weight: 1oz
Shaft Size: 7mm x 1