The 4 mm Stalco hex key is a reliable helper for the workshop, assembly, and service work. It is made from high-quality chrome-vanadium (CrV) steel, which ensures good strength and long service life with regular use.
The ball end makes work easier where it is not possible to place the key perpendicular to the screw – it allows handling at an angle, which you will appreciate especially when assembling furniture, maintaining machines, or working in confined spaces.
