/ Saws / PTA & Hand Saw Blades / Hole Saw Arbors / Arbor Adaptor / A12 There is a newer version of this product available KA12-N Hole Saw Arbor * Not actual product image 63260 A12 Hole Saw Arbor 63260 Other similar products Hole Saw arbor adapter fits arbors with a 1/2"-20 screw thread, allowing use of saws up to 152mm (6") diameter. Features Specifications Downloads Contact Starrett Features Adapter screws on to arbors with a 1/2"-20 screw thread and allows use of hole saws up to 152mm (6") Specifications Fits Arbors: A1, A4, A1-1, XA1 & XA4 Downloads Starrett Hole Saws (Bulletin 671) Starrett Hole Saw Brochure includes all hole saws, drive arbors, pilot drills, quick change systems sets and accessories