A Woodruff cutter, also known as a Woodruff keyseat cutter, is a specialized tool used in machining to create Woodruff keyseats, which are semicircular slots cut into a shaft. These keyseats are designed to hold Woodruff keys, which are small, semicircular metal pieces used to lock gears, pulleys, or other machine components onto a rotating shaft. High-Quality Material: Crafted from HSS M2 grade steel, these cutters offer superior hardness and durability, ensuring long-lasting performance even in demanding conditions. Comprehensive Set: This set includes 10 pieces with varying dimensions to suit a wide range of applications. Shank Diameter: 1/2" shank diameter, compatible with standard milling machines. Straight Tooth Design: Provides clean and precise cuts, making it ideal for producing keyseats with consistent accuracy. Cutter Dimensions (Dia x Thickness): STD 403: 3/8" x 1/2" STD 204: 1/2" x 1/16" STD 404: 1/2" x 1/8" STD 305: 5/8" x 3/32" STD 505: 5/8" x 5/32" STD 406: 3/4" x 1/8" STD 606: 3/4" x 3/16" STD 806: 3/4" x 1/4" STD 608: 1" x 3/16" STD 808: 1" x 1/4"