MetalTech™;;;circular saw blades 5-3/8 50T were specifically designed for blade life, cut quality, and speed in 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 M1™;;;; 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 charge.