Got these last week and used them on both my hammer drill and my Makita hammer drill. Installation was very easy as it's just one screw, but that's where the main problem lies. A screw. I've tightened the screws on both drill bits as tight as I can and I can still get the axle out of them. On impact, I can twist the thing back and forth very easily. On the drill I was able to tighten it just enough so it didn't move too much. It holds the bits pretty well, they don't move or fall out easily, and the magnetic strip holds a few screws. Not much obviously, but I've had about 5-6 with no problems. The colors are also a bit different from the drills, but to be honest, even my drills don't match in color. I would, however, recommend these guys if you're annoyed by the lack of access to a few bits. I mean, what other options do you really have?
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