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252025-03The difference between sleeve 1/2 and 3/81/2 represents 12.5mm and 3/8 represents 9.5mm. The 1/2 gauge sleeve is suitable for larger nuts with greater torque, while the 3/8 gauge sleeve is suitable for smaller nuts.
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252025-03Batch head material which is goodS2 tool steel is an alloy of carbon (C), silicon (Si), manganese (Mn), chromium (Cr), molybdenum (Mo), vanadium (V), with excellent impact resistance, strength and toughness
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