"This great little product is simple, cheap and saves a great deal of time when you need to quickly swap between bits, this can be done with one had in a split second, no need to fiddle around tightening and un-tightening your drill bit every few minutes, it also has a handy magnetic feature to make things even easier. What's not to like, every tool box should have one of these!"
"I purchased a magnetic holder for obvious reasons, not only did it not hold the screws neither did it hold the bit. Absolute rubbish. The only reason I have not taken it back is I am too busy to bother."
"The magnet will hold the screwdriver bit, but don't think for a minute that it will be strong enough to have any effect on a screw. Used this in my 18v drill driver, (set on the second-highest torque setting). The bit holder and shaft parted company, before the drill clutch even kicked in !! Very poorly made. Might be ok for a bit of light duty screwing, but don't try using for any serious action. (NB I had the same problem with two of the 150 mm versions of this tool) PS.. Screwfix refunded my purchases, no problems."