Hex allen key set (9 pcs) Standard series
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A hex Allen key set is a collection of hex Allen keys in various sizes that are used to tighten or loosen hexagonal screws and bolts.
A 9-piece standard series hex Allen key set typically includes sizes ranging from 1/16 inch to 3/8 inch, or from 1.5 mm to 10 mm.
Hex Allen key sets can be made from a variety of materials, including carbon steel, chrome vanadium steel, and stainless steel. Some sets may also be coated with a layer of black oxide or other material to improve durability and prevent corrosion.
