De Neers - 4 mm, Brown Allen Key is an excellent tool for cramped spaces. It negates the need for bulky tools. The 4 mm, Brown Allen Key uses S2 material as the fabrication material. The material provides a high hardness component to the Brown Allen Key. As a result, the Allen Key attaches itself firmly to the fastener head, and the arm offers a mechanical advantage in applying torque. In addition, the Allen key prevents any instance of metal shearing from protecting the fastener and itself. The S2 material is harder than the regular chromium-vanadium steel, which can handle higher wear resistance. In addition, the Allen key is strong than the CrV steel making it invulnerable to breaks and cracks.
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