The present invention includes a polishing pad or belt secured to a mechanism that allows the pad or belt to move in a reciprocating manner, i. A full vehicle model and a road description are used with the test rig to test and evaluate the tire as would be conducted on a real test track. The protrusions may be made of a pliable material to assist in removing wax, dirt andor other build-up from within an ear canal. The structure can maintain its upright position and remain in suspension permanently. The sense amplifier includes a transistor having a gate electrode which includes the first portion of the bit line. The post is made from a non-rectangular sheet that is convolutely wound around a mandrel and shaped into a desired cross-sectional shape.