There are two top performing hex keys: Wera and PB Swiss tools. Both couple exceptional elasticity with high hardness. Both have a ballpoint on one end of the key to be turned at an angle. Both won’t wear out easily and will last a long time. The only reason why I chose the PB Swiss Set is the colour code. It’s just so much nicer than the Wera ones.
for hexagon socket screws
chrome-plated and powder-coated, color coded by size
laser-marked serial number, lifetime guarantee