The Milwaukee 49-56-7055 Large Thread Quick Change Arbor is built for professional electricians and contractors who demand speed and reliability on the job site. Featuring a 7/16" hex shank and tool-free quick-change operation, this arbor eliminates the need for adapters and works universally with all major brands of hole saws 1-1/4" and larger — making it the go-to choice for rough-in wiring, panel installations, and conduit runs. The hollow shank design provides full pilot bit access, while durable hardened steel construction ensures it holds up through demanding commercial and residential applications.

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