Tree Shape Pointed End(shape G) Item No. Cutter Diameter Length of Cut Shank Diameter Overall Length R G0313M06 3 13 6 55 15 G0618M06 6 18 6 65 26 G0820M06 8 20 6 65 27 G1020M06 10 20 6 65 28 G1225M06 12 25 6 65 30 G1625M06 16 25 6 65 40