2, The compression and extension spring are made of high quality zinc plated steel, rust resistance, and with good durability for tension, high strength and hardness. Compression Spring: 9/32" x 1/2", 1/4" x 13/32", 7/32" x 11/16", 3/8"x 5/8", 3/8" x 3/4",9/32" x 3/4", 23/64" x 1-3/8", 7/32" x 1-1/2".
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