3.3 X 3.2 X 0.72 Inches

Pool Cleaner Black Small Idler Wheel Kit C17 Assembly with Wheel Bearing C60, Wheel Screw C56, and Wheel Washer C67 for 280 Black Max Pool Cleaner. It does this by transmitting rotation from one side of the drive shaft to another, in applications where it is undesirable to connect them directly.