"This bit holder is reduced in price probably cos it does not take the most common 25mm hex screwdriver bits. However it does take the 50mm hex bits and other bit holders perfectly. This bit holder is very well made and durable but sadly let down by the above:("
"It's very fat so not so good at fitting in those narrow spaces, but worst of all it won't hold the bits. They fall out at the slightest down angle no matter how I try to clamp the bits in. A waste of money."