GENUINE DORINGER Sawblades are manufactured of Super High Speed Steel, heat treated and hardened to 63-65 Rc. Every DORINGER sawblade is individually hammered and inspected to guarantee minimum run-out with-in German DIN standards. Each sawblade has a black oxide coating, vapor treated to insure maximum coolant coverage, longest sawblade life, and maximum performance. GENUINE DORINGER Sawblades are the finest cold sawblades manufactured anywhere in the world. Please specify the size diameter, number of teeth per sawblade and arbor diameter within the order notes section of checkout. Sawblades are available in combinations of size diameter of 250mm, 275mm, 300mm, 315mm, 325mm, 350mm, 370mm, 400mm, 425mm, and 450mm, arbor diameter of 32mm, 38mm and 40mm, and number of teeth 80, 110, 140, 160, 180, 220, 280, and 360. Please refer to the sawblade recommendation chart for additional details. If your required sawblade is unavailable, please contact the Doringer office via phone or email.