Niagara Cutter 79121 High Speed Steel Square End Mill

Niagara Cutter 79121 High Speed Steel Square End Mill is a 3/8-inch diameter milling tool with a square cutting end, made from high-speed steel. The square end geometry enables straight, perpendicular cuts for profiling, slotting, and pocketing on a variety of workpieces. The 79121 part number identifies this specific Niagara Cutter tool within its product lineup. Intended for use on standard milling machines, this HSS square end mill is suitable for general-purpose milling tasks across materials typically machined with high-speed steel tooling, including simple contouring and flat-bottom features often required in prototyping and light production work.