This Wera Hex Key Set has features that allow more torque to be delivered, dramatically reducing rounding out in the screw head and for more comfort during use. The keys are made from strong round bar and the plastic sleeves deliver more comfort. The multi-coloured sleeves allow quick and easy identification by size. Wera's patented Hex-Plus(r) profile allows up to 20% more torque without damaging the fastener. Supplied in a button opening tool clip that holds the keys firmly, but allows easy tool selection. This 9 piece set contains the following sizes: 1.5 x 90mm, 2.0 x 101mm, 2.5 x 112mm, 3.0 x 123mm, 4.0 x 137mm, 5.0 x 154mm, 6.0 x 172mm, 8.0 x 195mm, 10.0 x 224mm.