JET offers a variety of accessories to complete your wholesaw operations: holesaw arbors complete with pilot drill, pilot drill bits, arbor extension and arbor adapter
Holesaw arbor adaptor can be used with holesaws with 5/8-18 threads to 1/2-20 threads
Fits Arbor Hole: Adapts holesawswith 5/8"-18 threads to 1/2"-20