About this item Hex keys ball ends are crafted from high-quality heat treat chrome vanadium steel, with 52-55HRC hardness. Our hex key wrench set is made to produce premium performance, long term, and resistant use This set includes various hex key sizes; 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm. The allen keys set comes with a hinged case, reducing the effort in putting all the set's pieces together and keeping them Hex wrench developed with a ball endpoint, these hex keys set can easily remove and install most socket cap screws found in cars, furniture, equipment, and more. Allowing easier access to those hard-to-reach spaces and making it easy for adjusting in all angles Precisely-sized, chamfered ends insert smoothly into fastener head, reducing wear. The allen wrenches are the utmost tools for any amateur or professional DIY. They\'re perfect for working on bicycles, furniture, motorcycles, RC cars, machinery, vehicles, guns, etc. Our allen wrenches set has easily visible sizes marked on the case for fast size selection. The extra-long design will allow you to apply more torque with ease and accuracy