Milwaukee® Hole Saw, Series: Hole Dozer™, 3-3/4 in dia, 1-5/8 in Cutting Depth, 5 TPI, 43228 Arbor, 1-7/8 in OAL, Bi-Metal/Cobalt Cutting Edge, Bi-Metal Body, Toothed Cutting Edge, 135 RPM Aluminum, 60 RPM Cast Iron, 90 RPM Mild Steel, 45 RPM Stainless Steel, 3/8 in Chuck, Hex Shank, Use Arbor: 49-56-7210, 49-56-7240, 49-56-7250 and 49-56-9100 Quick-Change Arbor, Applicable Materials: Aluminum, Cast Iron, Mild Steel and Stainless SteelMade in The USA, The Milwaukee® Hole Dozer™ Hole Saw Features 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% 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. For Fast, Tool-Free Change-Outs, Use Milwaukee® Universal Quick-Change Arbors.
- Bi-metal construction with 8% cobalt for increased wear resistance