Taper (shape M) Item No. Cutter Diameter Length of Cut Shank Diameter Overall Length α M0311M06 3 11 6 55 14° M0618M06 6 18 6 65 14° M0820M06 8 20 6 65 20° M1020M06 10 20 6 65 25° M1225M06 12 25 6 65 25° M1625M06 16 25 6 65 25°