With a hard carbide construction and a durable FIREX coating with excellent heat and wear resistance, the Guhring 5510 Series is ideal for the drilling of long and short-chipping materials. Effecitive on structural and case hardened steels, cast steels, heat-treatable steels and alloyed steels with a tensile strength of up to app. 1200N/mm2, including carbon steels, bronze, cast iron and high alloyed AISi-alloys. Features and Benefits Hard carbide construction for added strength and rigidity FIREX coating for improved heat and wear resistance Ideal for drilling long and short chipping materials Specifications Self centering 3xD Concave cutting point geometry and web thinning. 140 Point angle Diameter tolerance m7 Shank tolerance h6 Manufactured to DIN 6537 Sizes 3.00mm to 20.00mm Typical Applications Case hardened steel Steel Structural steel Alloyed steels Bronze Cast iron