High Quality Material - HIDOTOL carbide burr set are made of premium heat-treated tungsten carbide material with high strength, hardness and durability, which is guaranteed to withstand the test of time.
Characteristics - 1/4" Shank fit for most rotary tools and grinders. This die grinder bit set is easy to grasp and use, safe and reliable; double cut tooth angle which prevents chipping. It can be used on all types of metals, including stainless steel and hardened steel, as well as wood, jade and marble