I've gone through a few of these lately looking for one with a good magnet. I install car radios and dropping screws is such a pain and time waster. My Black and Decker tip holder and my Dewalt tip holder don't do a very good job, and the sleeves tend to slip down a lot. I got these and the magnet is so strong it even affects my nut drivers some, saving me from having to go buy really expensive magnetic sockets. It pulls bits in hard also so they don't get pulled out when you're in the middle of a job. If you have a Makita drill go ahead and drop the money on these. My 9.6v Makita drill's chuck is pretty shallow, so these fit much better than other brands or no name ones that come with bit sets.

What I Really Needed Istalling Cabinets Was the 3 1/8 Holder.
Both Are Nice With Sleeves That Don't Spin With The Holder.