Chucking reamer with straight, decimal size- 0.5005", large end diameter - 0.5005", shank dia. .5005", flute length - 1-1/2", overall length - 4", number of flutes - 4, chamfer- 6 degree, cutting direction - 45 degree, material- solid carbide, bright finish, application- bright, metric size- 12.71mm.