U81F Aero Hole Saws - Fine Pitch

Solid construction.                           AISI M2 High speed steel.                                5/16-24 or 1/2-20 UN threaded bore 
Fine pitch hole saws are constructed in the same way as the coarse pitch type (U81C) but they have many more teeth 
and smaller chip spaces. They are useful for tougher materials and particularly indicated for thin sections and tubular items.