3/8" Downshear Rougher 3-Flute | 1-1/4" LOC | 3" OAL | 3/8" Shank

When you need to move material fast, this solid carbide 3/8" downshear rougher is the right tool. The 3-flute chipbreaker profile — also known as a serrated or castle rougher — breaks chips into shorter segments as it cuts, which dramatically reduces cutting forces, heat, and vibration compared to a standard spiral. That lets you run higher feed rates and deeper single-pass depths than you'd otherwise attempt. The downshear direction also keeps chips pressed into the cut rather than lifted, which helps protect top surface quality during aggressive passes. It measures 1-1/4" cut length, 3" overall length, 3/8" shank. Solid carbide, Made in the USA by Centurion Tools LLC.