this page is for the prop AND the prop holder.
Plane prop
Aero-naut 10x8 (inches) CAM Carbon Folding Blades (25.5x20 cm)
Aloft Hobbies
alt source 1 10718200 EAN: 4012230077512
alt source 2 AERONAUT7234/32
"Aero-naut CAMcarbon 10"x8" folding propeller blades, with profile developed by Rudi Freudenthaler. High performance, efficient propeller blades with 8mm root for 3mm fixing screw. All Aeronaut CAMcarbon folding propeller blades have 8mm blade roots."
Prop holder
Also known as spinner bar, center hub, yoke,
Aero-naut 724222 (7242/22)
42mm Middlepart Yoke for 40mm, folding prop bar.
alt sources: alt_1, alt_2, alt_3, alt_4
Prop reducer/spacer/bushing
This 8mm to 6mm Reducer fits between the motor shaft and prop holder. Approx 8mm long.
Source1 "for Graupner Props"
Prop blade stop
You can use an old credit card or thin plywood or ~1mm thick aluminum plate for making blade stops. More info