The MILWAUKEE® 7 48T Metal Circular Saw Blades are specifically designed to exceed contractor's expectations for blade life, cut quality, and speed in the most demanding metal cutting applications - without a lubricant. The metal cutting circular saw blades have hand-tensioned hardened alloy steel bodies. This extends blade life and delivers the highest quality cuts available. The blades have Carbide-Tipped Teeth with Alternate Top Bevel grind to shear through metal delivering burr-free, cool-to-touch cuts.