【Efficient cutting】 A very dense diamond layer can make cutting more aggressive and faster. Our tile drill bits can be used on all common angle grinders with M14 spindle. angle is the double that of an electric drill/driver. 【Dry and Wet Cutting】Because our high quality hole saw has a very dense and wide high temperature resistant professional diamond layer, it has a long service life. They can be used for both dry and wet cutting. 【Wide range of applications】Application areas: ceramic tiles, porcelain, ceramics, natural stone tiles, hard floor tiles, granite, glazed clinker, clinker tiles, hard tiles, plastics, glass steel, etc . Furthermore, you can use the side of the drill to adjust the hole (useful when an oval or wider hole is required).