Features： 1、Carbide Material: The hole opener is made of carbide, has a pointed blade and is resistant to cutting, and has good perforation ability. 2、Continuous Teeth: This is a very durable hole opener, continuous teeth, suitable for any hard work. 3、All in One Design: The hole opener has drill bits, springs, and wrenches, so there is no need to purchase any additional drilling accessories. 4、Application: This hole opener is used to cut stainless steel, metal plate, FRP and wood quickly and accurately. 5、 Cutting Effect: The hole opener can cut smoothly, cutting effect, replaceable high quality guide bit, convenient and durable. Specification： Item Type: Carbide Teeth Hole Saw Material: Carbide Purpose: Hole Saw Applicable Drilling Materials: Stainless Steel, Aluminum Alloy, Castings, Section Steel, Iron, Copper and Other Hard Alloys Package List： 1 x Hole Saw 1 x L Wrench