The Standard Pyramid tool is a three-sided tool shaped like its name implies. It is used in applications where additional tool strength is needed. Unlike the Profile tool which only has one cutting edge, all three sides of the Pyramid cut as it rotates. These tools work well for milling materials like brass, aluminum, and plastics. Need a wider included angle for your application? Compare this to the 60-degree pyramid tool. Solid Carbide Included angle: 40 degrees Side Angle: 20 degrees Cut Length inches: .1690 Cut Length MM: 4.3 Shank size: 1/8 (.125) Length: 1-1/2 inches Made In USA