H6435 Hole Saw Saw Dia 20mm Bi-Metal Max Cutting Depth 1-31/64 In. Teeth Variable Pitch Teeth per Inch 4/5 Arbor Hole 1/2 In. Use Arbor Mfr No DW1800 DW1810 Thread Size 20 In. Pilot Drill Included With Arbor Drill Size 1/4 In. Plumbing- Entrance Holes Into Junction Boxes and Through Drilling For Conduit Mechanical and Plumbing-Through Holes For Pipe T- Joints Into Pipe HVAC-Through Holes For Pipe Conduit Pipe/Sprinkler Fitters-Saddle Cuts Into Pipe For T- Joints
