The basetech mini drill set with 78 accessories is a multi talented device and with its comprehensive range of accessories you can drill polish and grind it is equipped with a collet chuck for the most diverse of tools in addition this handy electrical power tool is equipped with a flexible shaft making it easier to work on hard to access spotsto quickly change the tool the boring bar can be locked into position with the press of a button the collet chucks are made of corrosion resistant