Estool has introduced a new category of milling inserts that carry square single-sided inserts with 4 cutting edges, designed for reducing cutting forces when used on lower power machines or long overhang applications. It will be an excellent choice to achieve high quality 90°square shoulder milling. Moreover, with the helps from the special chip breaker –ALH, AKPT inserts enable to give highly effective performance for Aluminum. The APKT should enable to perform the face milling in combination with side milling, since the square should milling requires to machining the face and the side simultaneously. There are many benefits by using our APKT inserts. Such as most of manufacturers are seeking for economical and high-performance tools to reduce costs and increase productivity.