We save you the trouble of hunting down the correct size shaft arbors that are compatible with our Swag Super Shaft's. The 3/8" hole saw arbors are manufactured by Milwaukee and are available in two different sizes.
Small Arbors fit hole saws ranging from 9/16" to 1 3/8" diameter Milwaukee PN# 49-56-7010.
Large arbors fit hole saws ranging from 1 1/4" to 6 7/8" diameter Milwaukee PN # 49-56-7040.
We have found that it works best to permanently leave the arbor inserts in your hole saws. To remove the arbors from the shaft you simply loosening the 3 sets screws, this cuts down on having to thread/unthread the hole saw and potentially galling up the threads on your hole saws.