Grizzly G9756 Hess End Mill Set, 20-Piece This high speed steel set features 2 flute and 4 flute end cutting end mills in the following sizes: 3/16-Inch 1/4-Inch 5/16-Inch 3/8-Inch 7/16-Inch 1 Sizes are marked in a durable molded case Made in united states