LARGE THREAD QUICK CHANGE ARBOR - 3/8"
Tool-free operation quick change arborUniversal fit arbor works with all major brands-of hole saws 1-1/4" & larger-no adapter requiredAccepts 1/4" straight or 3-flat shank pilot bitMade of hardened steel & alloy steelMinimum chuck size necessary to use; 3/8"Works with pilot bit 49-56-8000, 49-56-8010, -and 49-56-8005