MetalTech™ circular saw blades were specifically designed to exceed the expectations of contractors for blade life, cut quality, and speed in the most demanding metal cutting applications – without a lubricant. A hand-tensioned, hardened alloy steel body extends blade life and delivers the highest quality cuts available. Carbide tipped teeth with Alternate Top Bevel grind shear through metal leaving burr-free, cool-to-touch cuts. Designed for use with the M18™ Cordless 5-3/8" Metal Saw, these blades feature a thin kerf that reduces the amount of drag and resistance while cutting, resulting in more cuts per chargeMilwaukee 48-40-4070 Features: Dry - No lubricant required, saving time and money with less mess Cool - No extreme heat buildup preserves blade life and allows handling the work piece immediately Clean - No burrs eliminates secondary operations saving time and money Lasts up to 25x longer than abrasive blades Milwaukee Super Sawzall Blade Specifications: Diameter: 5-3/8 Inch Number of Teeth: 30 Arbor: 20 mm Max RPM: 4,500 Kerf: 1.6 mm