Sealey vs3816 suspension roller bar sealey vs3816 p this suspension roller bar from sealey is a simple but ingenious tool that tests for movement and wear in suspension components such as ball joints bearings and bushes lower the road wheel on the roller bar using a 1 2in square drive breaker bar to rock the road wheel to highlight any movement ideal for use on a platform ramp p sealey vs3816 suspension roller bar