This cutter is for Milwaukee 4245 Steel Hawg.

Milwaukee Tool 49-57-0939 15/16" Quick Change Tang Drive Steel Hawg Cutter is an annular cutter made of steel with a carbide tip. It has a bright finish and features a 15/16 inch size with a tang shank. The tool bit material is steel with a carbide tip, and it is designed for cutting applications. Made in Japan, this unit is compact with dimensions of 3.2" in length, 1.6" in width, and 1.6" in depth.