The Milwaukee THE AX Sawzall Blades 48-00-5021 are reciprocating saw blades designed for use with the Milwaukee THE AX Sawzall. These blades are made to efficiently cut through a variety of materials, including wood and metal. The brand of these blades is Milwaukee, a trusted name in the tool industry. The type of saw blade is a reciprocating saw blade, which is a type of blade that moves back and forth to cut through material.