Buy Chisels The same hole can be made faster and using less power.The depth to which a hole saw can cut is limited by the depth of its cup-like shape. Most hole saws have a fairly short aspect ratio of diameter to depth, and they are used to cut through relatively thin workpieces. However, longer aspect ratios are available for applications that warrant them.Cutting with a hole saw is analogous to some machining operations, called trepanning in the trade, that swing a cutter analogous to a fly cutter in order to achieve a similar result of annular kerf and intact core. Product Description Main Products Company Information Certifications ExhibitionBuy Chisels website:http://www.yuerongtool.com/chisels/