1、Precise Grinding Grooves: Precise grinding grooves, high efficiency and flexibility, direct chip removal and unhindered chip removal, beautiful and delicate, effective, labor saving, and fast drilling speed 2、Universal Shank Type: This is reamer with glossy surface, widely used, universal shank type, and high grinding accuracy 3、Integral One Time Forming: This integral one time forming reamer, with stable sizes, accuracy hardening, and durability 4、Applicable Materials: Suitable for stainless steel, carbon steel, cast iron, die steel, alloy steel, tool steel, non ferrous metal materials 5、Wide Application: This is reamer, which is widely used for light cutting, repair work, destocking or only for enlarging holes