Order the Pololu ball castor variety pack and save! The variety pack consists of seven different Pololu ball casters. The replacement 3pi ball castor and new version of the ball castor with 1″ plastic ball are not included with this variety pack.
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This combination deal includes one of each Pololu ball castor:
Note: This set does not include the replacement 3pi ball castor or the new ball castor with 1″ plastic ball.