Chucking reamer comes with straight shank, 0.2050" decimal size, 0.2050" large end diameter, 0.2050" shank diameter, 1" flute length, 3" overall length, 4 number of flutes, Chamfer 45 degree, right cutting direction, solid carbide material, bright finish, ferrous & non-ferrous application, 5.21mm metric size.