Chucking reamer comes with straight shank, 0.1541" decimal size, 0.1541" large end diameter, 0.1541" shank diameter, 3/4" flute length, 2-1/2" overall length, 4 number of flutes, Chamfer 45 degree, right cutting direction, solid carbide material, bright finish, ferrous & non-ferrous application, 3.91mm metric size.