Amazon.com: RC Boat 4-Blade Propeller, 2 Pcs High Strength CW CCW Plastic 4- Blade Full Immersion Propeller for RC Model Boat Accessory Parts : Toys & Games
Turning Point Propeller 31501931 Express Right Stainless 4-Blade Propeller (14 X 19)
Amazon.com: E-flite 3-Blade Propeller 11 x 7.5 EFL5962 Replacement Airplane Parts : Toys & Games
Cole-Parmer 316 Stainless Steel three-blade propeller, 3" dia x 5/16" bore dia: Amazon.com: Industrial & Scientific