Patent ID: 8568068

Claim:
A tool comprising: a cutting section comprising a multiplicity of cutting edges and flutes; a shank section; and a chucking section, the shank section extending from the cutting section to the chucking section, wherein: peripheries of cross-sections through the chucking section perpendicular to an axis of the tool are substantially uniform over an entirety of the chucking section, the chucking section comprises a number of fluid channels which corresponds to the number of flutes, and for each of the fluid channels, fluid passing through the fluid channel travels from a first end of the chucking section to a second end of the chucking section, travels outside an outer radial periphery of the shank section from a region of the shank section that abuts the chucking section to a region of the shank section that abuts the cutting section, and enters into a respective flute in the cutting section.