Our Conical Tapered High Speed Steel end mills have many of the same characteristics of our carbide variety, but are available in significantly more configurations. They are the perfect choice for easy and medium to machine materials or applications with minor machining requirements. The Conical Tapered end mill was created by us in the 1940's to reduce significant fixturing time, combine multiple operations into one and create parts that were previously impossible to machine. These tools are a household name and our quality has been tested time and time again.