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Buy the M4 Metric Hex Keys (Short Arm), Alloy 8650, Plain, USA online from South Coast Fasteners. It measures M4 size, Alloy 8650 with a plain finish. The hardened finish stands up to repeated service. Used in shop, garage, and field work, it is part of our Metric Hex Keys (USA) line, stocked across industries such as Construction, Electrical, and Manufacturing.
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