Type of processing

•  Finishing (4)
•  For lettering and engraving (1)
•  Nesting (2)
•  Roughing (2)

Type of spiral

•  Compression cutter (2)
•  Downcut / negative (1)
•  Upcut / positive (2)

B (cutting length)

• (no filter) 

  1-1/4” (4) 1” (1) 7/8” (2)

D (diameter)

• (no filter) 

  1/8” (1) 3/8” (4) 1/2” (4) 1/32” (1) 1/16” (1)

L (total length)

• 3” (5) 

  4'' (1) 60 (9) 50 (6) 70 (6) 80 (16) 90 (3) 100 (12) 78 (2) 85 (1) 105 (1) 115 (3) 125 (1) 135 (1) 150 (2) 140 (1) 110 (5) 120 (2) 165 (1) 130 (3) 2” (2) 2-1/2” (2) 4” (3) 3-1/2” (1) 2-1/12” (1)

S (shank)

• (no filter) 

  1/4” (1) 3/8” (2) 1/2” (2)

Z

• (no filter) 

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