Built for professional electricians and contractors who can't afford downtime on the job site, the Milwaukee 49-56-9100 Large Thread Quick Change Arbor delivers fast, tool-free hole saw swaps without adapters. Compatible with all major brands of hole saws 1-1/4" and larger, this 7/16" shank arbor fits any 1/2" or larger drill chuck — making it a reliable addition to any rough-in, panel work, or conduit drilling application. Constructed from hardened steel for long-lasting durability, it's the kind of accessory that earns its place in every electrician's kit.

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