Hexagonal head INTERTOOL ET-0127 is made of chrome-vanadium steel, which gives it high strength, elasticity and durability. Due hexagonal shape, a high contact area with the swirl element that allows to apply high torque and minimizes the likelihood of "slizyvanie" faces fastener element. Head length - 78 mm, which allows using it when working with recessed parts or fasteners on the protruding studs.