This is a set 1.5, 2.0, 2.5, 3.0, 4.0, 5.0 x 120mm Allen Wrenches. The new tools feature an eye-catching hollow honeycomb design with light weight handle for easy traveling. The tips are spring steel and titanium nitride coated to make it harder and more durable compared to normal ones. This and the new lexan bottom cover gives you a more comfortable, controllable and lighter feeling.