Jack tubes are coated with a rust inhibitive process called E-coat. The coating exceeds the A.S.T.M. standard 2000 hour salt spray test. The coating can also serve as primer for custom paint finishes. All BAL jacks incorporate precision molded, heat treated, copper alloyedmetal gears and nuts.. High Performance Bearings. The internal screw is coated from top to bottom with a specially formulated lubricant that providesincreased protection against wear and corrosion. High Strength Tubing
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