Milwaukee 49-56-7240 is a large thread pull-back hole saw arbor with a 7/16" shank.
Large thread arbors drive Milwaukee hole saws 1-1/4" and larger, the sizes most often used for pipe, drain and conduit penetrations. The 7/16" shank should match your drill chuck capacity; a 7/16" shank suits larger drills and heavier cutting.
The pull-back design is intended to make it easier to seat and release the hole saw. Use it with a pilot bit, thread the saw fully onto the arbor, and use a small-thread arbor for saws under 1-1/4".
Specifications
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Brand: Milwaukee Tools
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Manufacturer Part #: 49-56-7240
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Thread: Large thread
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Shank: 7/16"
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Design: Pull-back
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UPC: 045242225804
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Category: Arbors & Pilot Bits
See also: arbors and pilot bits, bi-metal hole saws, all hole saws, all Milwaukee Tools.