makita should be more selective what they put their name on!better bits at harbor freight for half the price! these are great if you're trying to melt through plastic, but they even struggle to get through wood and leave a messy hole! 1 broke (pushing too hard to try to cut through sheer metal), 2 came out of the 1/4" sleeve, the others just burn up on anything metal. worst ever purchase ! (sorry for the typos, this app is terrible to correct mistakes, so I have to submit a is- work with me here, point is DON'T BUY THEM)
by electrician