Center Reamer Set, Single Ended, Number of Pieces 5, Number of Flutes 3, Included Angle (Deg.) 60, Cutting Capacity (In.) -, Pilot Dia. (In.) -, Pilot Length (In.) -, Shank Dia. (In.) -, Shank Length (In.) -, Overall Length (In.) -, High Speed Steel, Uncoated Finish, General Purpose For Aluminum, Alloy, Carbon And Tool Steels With Better Finish Requirements, Sizes Included 1/4, 3/8, 1/2, 3/4, 1 In.