• (1) Large Quick Change Arbor, 7/16 in.
• Tool-free operation
• Universal, quick change with all brands of hole saws
• No adapters required
• Durable hardened steel construction
• Fits all hole saws 1-1/4 in. and larger
• Fits all drill chucks 1/2 in. and larger
• Size Range 1-1/4 in. & Larger
• Shank Size 7/16 in.
• Special Feature Quick Change
Milwaukee® hole saw arbors are made from hardened carbon steel and alloy steel for greater durability. The 49-56-7240 features a 7/16 in. hex shank, which can be used with any 7/16 in. extension. The 49-56-7240 also features a drive plate with an enlarged grip area for easier operation.
I have the kit this came in and for about a month I have used them quit a few times, however this part the threads for the Allen head set screw literally just spun right out. Not like it was loose like the threads were just pulled right out. I love the set but that's a problem when the first time you go to tighten the bit it just keeps spinning