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The SPC zinc axle shims (3.5" x 6.25" x 3.0°) are heavy-duty truck shims built from a zinc alloy to improve compression strength and hardness over aluminum. Supplied six per box, they work with Z blocks or axle spacers—spread the load to prevent shim crushing—and provide a reliable means to align front or rear axles on tandem trailers and trucks.
SPC Performance ZINC SHIMS 3.5x6.25x3.0 deg.
