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10 Pack - Extra Large Key Rings - 1.25 Inch Heat

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Key Ring 50 Pcs 1.25'' -15 Pcs,1'' -15Pcs, 0.8''-20Pcs Ring Flat

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The benefits of heat treated steel are increased strength, hardness, toughness, and wear resistance. Making them much harder to bend or break. This process basically alters the micro-structure of the steel by exposing the steel to high temperature for a certain period and then quenching it (rapidly cool).

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