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BrickLink - Part 62670b : LEGO Duplo Propeller Rotor 3 Blade, 4 Diameter, Large Hole [DUPLO, Aircraft] - BrickLink Reference Catalog
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BrickLink - Part 6346 : LEGO Duplo Propeller Rotor 3 Blade, 9 1/2 Diameter [ DUPLO, Aircraft] - BrickLink Reference Catalog
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