A stupid thing and a half... it doesn't collect "almost" anything from dust... it can open while drilling and you can become "hairy" and you have to hold it with a third hand stuck to the wall because with the other two you are supposed to hold the drill (I'm not talking about those who like acrobatics...) warning.... you simply throw away the few euros it costs.... it's better to treat someone homeless to 1-2 souvlakis...