Packing Tools and Gasket Cutters
Insert the appropriate Dovetail Packing Stop (A) with the large end toward the head assembly-respective scales should line up.
The cutter head (B) may now be attached to either side of the base, depending on the desired cut (45° or Butt cut). Use the two 10-32 x 5/8" machine screws provided to attach the Cutter Head.