Brand: Milwaukee Tool Manufacturer's Part Number: 49-56-0092 Part Type: Hole Saws Product Line: Milwaukee Hole Dozer Hole Saws Summit Racing Part Number: MWT-49-56-0092 UPC: 045242193073 Hole Saw Material: Bi-metal Hole Saw Thread Size (in.): 1/2-20 in. Arbor Included: No Quantity: Sold individually. Milwaukee Hole Dozer Hole Saws Milwaukee Hole Dozer hole saws feature Rip Guard， the strongest tooth form in the industry―backed by the Rip Guard Limited Lifetime Tooth Break Warranty. Each tooth is built with more steel behind the cutting edge for added strength. The Rip Guard warranty on tooth breaks is a first for the hole saw industry. The added tooth strength， along with 8 percent cobalt， give added life to the teeth， allowing for increased productivity on the jobsite， as well as continued hole quality. The Hole Dozer includes Plug Jack， an all-access slot design that allows for full access during plug removal. The Plug Jack gives access lower into the cup for thick material and higher towards the teeth for thin material. With multiple positions to apply leverage and better plug access， Plug Jack increases productivity and eliminates wasted downtime between holes. Kits include a variety of Hole Dozer sizes and other accessories.