Milwaukee HOLE DOZER Ice Hardened Hole Saw, 4-1/2 in Dia, 1-5/8 in Cutting Depth, 3.5 TPI, 1-7/8 in Overall Length, 1/4 in Dia x 3-1/2 in L Drill, Bi-Metal/8% Cobalt Cutting Edge, Carbon Steel Body, Toothed Cutting Edge, 75/35/50/105 rpm, 3/8 in Chuck, Round Shank, Use Arbor: 49-56-7040/49-56-7055/49-56-7140/49-56-7150/49-56-7210/49-56-7240/49-56-7250 and 49-56-9100, White, Applicable Materials: Aluminum, Cast Iron, Mild Steel, Sheet Metal and Stainless Steel

ITEM FEATURES:

• Rip Guard the strongest tooth form in the industry
• Plug Jack, an all access slot design for fast plug removal
• Bi-metal construction with 8% cobalt for increased wear resistance
• Ice Hardened cryogenically treated for upto 50% longer life
• Optimized tooth form for upto 2x faster cutting
• Wide, angled and offset slots for easy plug access
• Functional slots for faster plug removal
• Matrix II bi-metal teeth for greater durability
• Positive rake angle for fast cutting
• 75 rpm mild steel, 35 rpm stainless steel, 50 rpm cast iron, 105 rpm aluminum