LEGO Yellow Propeller 2 Blade 5.5 Diameter has been used in at least 38 LEGO sets over the past 39 years, since it was first used in 1985. You can also find this part in at least 10 other colours. It has a design ID of 4745 which can usually be found molded into the bottom of the part.
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LEGO Yellow Propeller 2 Blade 5.5 Diameter (4745) wth Mounting Brick
Bricker - Pièce LEGO - 4745 Propeller 2 Blade Twisted
LEGO propeller - yellow - Extra Extra Bricks
LEGO PART 4745 Propeller 2 Blade Twisted
Bricker - Pièce LEGO - 4745 Propeller 2 Blade Twisted
LEGO 10 X Propeller Aeroplane Yellow Propeller 2 Blade Twisted 4745
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LEGO 3079 Kelloggs Promotional Freestyle Set: Duck Set Parts Inventory and Instructions - LEGO Reference Guide