Wera 05028161001 393 S Extra Slim Bit Holder with Flexible Shaft 1/4 Inch x 173.5 mm

It's high quality, made by Wera and does it's job well. Flexible enough to go around corners, but stiff enough to apply a good bit of torque to the fixing. Very useful in awkward spaces.

This is a brilliant tool, this is the extra slim version which is so much better in real world use that the version with a normal bit holder. The shaft isn’t as flexible as other similar tools but it is far more robust, the only improvement that could be made to this would be to make the shaft slightly longer to allow the user to get more of an arch in the shaft which would make it perfect.

Very good quality product it flexesWell even under heavy load and can turn Alan screws well,will fit 1/4 screwdriver bits

This is one of those tools that may not be used that often, but when it is then it is worth its weight in gold (though it weighs 120g and not the 350g according to the specifications on Amazon). Attempting to remove a screw that is hard up against a wall by trying to angle a straight screwdriver is no fun, usually ends up stripping the head, and isn’t even worth trying with a flat-head screw!This is a typical Wera approach to the problem, with a well-made take on the usual flexible bit holder at ‘standard’ Wera cost (“buy once, cry once” though with Wera you might cry for a long time!)The driver was delivered without instructions, not something that has ever been a problem - until now! There is a small locking mechanism for inserting the bits and it is not that easy to see unless you know it is there. The ringed part at the end of the bit holder pulls out to insert the bits, and then is pushed back to lock them in place. Once discovered, this mechanism works particularly well and really does lock the bit in place.While flexible, this driver does not appear to bend to 90º as per the images on Amazon. I can get this to about 45º before it starts to complain and it feels (and looks) like the shaft might start breaking out of the holder. To be honest, I rarely need to go even to 45º but given it is advertised as easily going to 90º I feel it should lose a star from the rating.Wera make some really good bit holders, though they are all fairly large and can be a problem in tight spaces where the bit holder itself can get in the way. However, as advertised this bit holder is very slim (10.4mm) and only protrudes 1.5mm more than the bit being held if you measure from the corner of the bit or 1.78mm from the flat edge of the bit. This means that for typical screws the holder is about the same diameter as the screw head itself - pretty good.The only other slight criticism is that at 175mm the shaft is a bit short for certain hard to reach applications. If it were longer at about 250mm this would make this tool even more useful (and additionally probably allow it to bend the full 90º).Overall, a very handy tool to have in the tool bag, and worth the investment.Pros:Small headLock mechanismWell madeComfortable gripCons:Cost (well it is a Wera tool)Not quite as flexible as advertisedSlightly shorter shaft that might be an issue for certain applications

Works well.

Awesome product good for tight spaces

As reported in other 1* reviews, 1/4" (6.35mm) screwdriver bits don't appear to fit on first attempt.Whilst the bit holder is magnetic near the base, it is also necessary to slide forward the grooved ring on the bit holder, insert the bit, and optionally snap the ring back into position. This then holds the bit firmly in position, so it can't drop out into some the hard-to-reach location, which is probably why you bought this screwdriver in the first place!I've measured my test bit with a micrometer; it is exactly 0.250" - so rest assured they do fit.Other notable feature: the flexible shaft has enough bend but without twisting under torque, unlike some cheaper spiral spring extensions.