RobbJack - CD8-203-08 2 Flute Regular Length Downshear Solid Carbide Spiral Router 1/4" ShankThe C8 series are great for applications that require multiple size tools all with common 1 4" diameter shanks. The larger shank also helps with rigidity and improves performance. The CD8 series are downshear tools with high positive rake angles for non ferrous materials like aluminum, brass, copper, and wood. This tool is a stub length 2 flute downshear tool. This helps to put downward force on the material keeping laminated materials or sensitive