Enthusiastic Two Thumbs Up is the initial rating Im giving the Spider Tool Holster. I will report back if it doesnt hold up to wear & tear while working. Lets get the one knock out of the way, the enclosed adhesive just isnt strong enough. I had to JB Weld it to my drill to make it stay on. But in all honesty I was pretty sure Id end up having to do that so it wasnt a surprise. With it properly bonded to my drill, its the best bit holder out there, bar none. And Ive tried a bunch, probably in the double digits at this point. I use 1/2, 7/16, 3/8 & 5/16 in a constant rotation and this holder allows me to rapidly swap out those nut driver tips when Im on the move doing my work. Sure beats fumbling through my pockets or any other number of inefficient ways of trying to keep track them while Im working. Again, the only knock would be for the adhesive which is easily remedied with some epoxy. Also, the durability remains to be seen, but if lasts 12 months or more I would consider it worth it for how much time it saves me while working. Enthusiastic Two Thumbs Up on my purchasing scale.