High alloy steel 1/4" Shanks are heat treated their entire length and black Oxide treated for added strength and durability.Exhaustive in our efforts to make the world?s safest tools, Unique in the marketplace, relevant to our customer?s work style, Proto helped build 1934 Fords, the Golden gate bridge and Apollo 1295, made in America, making the highest quality tools Comes first, confidence that our tools will help keep them working longer and safer.

High alloy steel 1/4" Shanks are heat treated their entire length and black Oxide treated for added strength and durability.Exhaustive in our efforts to make the world?s safest tools, Unique in the marketplace, relevant to our customer?s work style, Proto helped build 1934 Fords, the Golden gate bridge and Apollo 1295, made in America, making the highest quality tools Comes first, confidence that our tools will help keep them working longer and safer.