Package Include:<br />5x Hole saw drill bit<br /><br />Specifications:<br />Product name: Hole saw drill bit<br />Size: 16mm/0.62" ，  18.5mm/0.72" ，  20mm/0.78" ，  25mm/0.98" ，  30mm/1.18"<br />Material: HSS high speed steel<br /><br />Feature:<br />High-speed steel and stainless steel hole saw drill hole saw， sheet metal reamer.<br />Through a special heat treatment， sharp edge， high strength.<br />High precision， smooth cutting， especially impact resistance， wear resistance.<br />Openings for stainless steel， iron， aluminum， and various types of pipes.<br />