Hole saws are made from tough, shatter-proof, sturdy HSS bi-metal. The saw teeth are made from high-quality M42 material. They are used for cutting out holes. The arbor with a 5/18-18 thread is part...
For Aligning Existing Holes Prior To Bolt Or Rivet Installation. Point Is Tapered To Permit Entry Into Overlapping Holes. 3-Flat Shank For Grip In Portable Electric Or Pneumatic Tools