Milwaukee® Ice Hardened™ Hole Saw, Series: Hole Dozer™ 49-56, 1-1/4 in Dia, 1-1/2 in Cutting Depth, 6, 2-1/8 in Overall Length, 1/4 in Dia x 3-1/2 in L Drill, Cobalt Bi-Metal Cutting Edge, Carbon Steel Body, Toothed Cutting Edge, 275 /140 /180/410 rpm, 3/8 in Chuck, Round Shank, Use Arbor: 49-56-7210, 49-56-7240, 49-56-7250 and 49-56-9100 Quick-Change Arbor, White, Applicable Materials: Aluminum, Cast Iron, Mild Steel, Sheet Metal and Stainless Steel
Features: Ice Hardened Cryogenically Treated For Up To 50 PCT Longer Life; Optimized Tooth Form For Up To 2X Faster Cutting; Wide, Angled & Offset Slots For Easy Plug Access; Bi-Metal Construction With 8 PCT Cobalt For Increased Wear Resistance; Works With The Following Arbors: 49-56-7240, 49-56-7250, 49-56-9100, 49-56-7055, 49-56-7040, 49-56-7140 & 49-56-7150; Rpm Mild Steel: 275 RPM; Rpm Stainless Steel: 140 RPM; Rpm Cast Iron: 180 RPM; Rpm Aluminum: 410 RPM
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