Chucking Reamer, Round Shank Shank, Decimal Size (In.) 0.7490, Shank Dia. (In.) Slightly Smaller Than The Cutting Diameter, Flute Length (In.) 2-1/2, Overall Length (In.) 9-1/2, Number of Flutes 8, Chamfer (Deg.) 45, Right Hand Cutting, High Speed Steel, Bright Finish, For Aluminum, Alloyed, Stainless And Tool Steels, Cast Iron And Plastic