Type of processing

•  Finishing (3)
•  Roughing (2)

Type of spiral

•  Downcut / negative (5)
•  Upcut / positive (10)

B (cutting length)

• (no filter) 

  12 (3) 16 (1) 32 (1) 22 (2) 14 (2) 17 (3) 45 (1) 35 (3) 27 (1) 55 (1) 72 (1) 1/2” (1) 3/4” (1) 1-1/4” (1) 1” (1) 2” (1)

D (diameter)

• (no filter) 

  3 (3) 4 (3) 5 (3) 6 (2) 7 (1) 8 (2) 10 (3) 11 (1) 12 (2) 14 (1) 16 (1) 18 (1) 20 (1) 4.5 (1) 3.5 (1) 1/8” (1) 3/16” (1) 1/4” (1) 5/16” (1) 3/8” (1) 1/2” (1)

L (total length)

• (no filter) 

  60 (2) 50 (1) 70 (2) 80 (4) 90 (1) 100 (1) 115 (1) 110 (1) 130 (1) 2” (1) 3” (1) 4” (1) 2-1/12” (1)

S (shank)

• (no filter) 

  10 (1) 12 (1) 6 (1) 8 (2)

Z

• 2 (5) 

  1 (1) 3 (4) 1+1 (1) 2+2 (2) 3+3 (2)

Rotation

• RH (5) 

  LH (1)