This is a well rounded set for cutting woodruff keys. Made from high speed steel and feature 1/2" shanks and a wooden tray. Includes the industry standard sizes: 3/16" X 1", 1/4" X 3/4", 3/16" X 3/4", 1/8" X 3/4", 5/32" X 5/8", 3/32" X 5/8", 1/16" X 1/2", 1/8" X 1/2" and 1/8" X 3/8".