All keys in the Faithfull 9 Piece Colour Coded Hex Key Set are not only made from S2 stainless steel for exceptional impact resistance, but are chamfered to prevent damage to the blade and fitting. Thanks to the ball end design, the keys allow 25 degree access to deep set screws or difficult to reach places at offset angles, while the colour coded blades empower easy metric size identification. Complete with a handy storage case for safe keeping in both pockets and toolboxes.