Duplo Brick 2 x 2 x 2 Curved Top with Yellow Propeller / Rotor Holder

Reference

31248c01

Duplo Brick 2 x 2 x 2 Curved Top with Yellow Propeller / Rotor Holder (part 31248c01) is a LEGO element. It appears in 6 sets, including Brick Bucket Large and Bucket.