Function Brick Round 4 x 4 x 2/3 with 4 Studs (Generic for Gadgets)

Reference

18868c00

BrickLink® #

18602c01

Function Brick Round 4 x 4 x 2/3 with 4 Studs (Generic for Gadgets) (part 18868c00) is a LEGO element. It appears in 42 sets, including Aquaman Fun Pack and Back to the Future Level Pack.