4 Flute Extra Long Shank Ball Nose End Mills
4 Flute Extra Long Shank Ball Nose End Mills. These mills are uniquely designed with long shanks and short flutes to reach into deep cavities. They are often used in the mold machining industry. They have 4 cutting edges, and a center cutting full radius or quot;ballquot; on the end. They have a 40#176; helical spiral to reduce cutting forces when reaching deep.