Arbors are needed in order to run the hole saw on a drill. Other accessories include replacement pilot drills for the arbors, extension bars to enable use of a hole saw in tight areas and ejector springs to help ease the slug out of the hole saw after it has cut the hole.

•  Hex shank 3/8"
•  Chunk size 3/8"
•  Thread size 5/8"-18UNF
•  Fit hole saws 1-1/4"(32mm) to 8-17/64"(210mm)