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One piece design for strength and durability. Made from S2 steel and specially heat treated for greater strength and durability. Reverse taper to help prevent binding. Modified parabolic striking end to help reduce mushrooming and chipping. Black oxide finish to help prevent rust corrosion, extending tool life and performance. A polished identification panel on one of the flats is marked with the tool number and size in a black inlay. To align holes in two or more pieces of metal through which a bolt or screw is to be inserted.
Proto offers a complete line of more than 5,000 tools and sets that are manufactured to the highest standards. Proto tools exceed ASME specifications, feature TorquePlus drive configuration on sockets and wrenches.
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