GC - 20pc HSS Mini Micro Twist Drill Bit Set Wire Gauge Index 61-80 / 0.3-1.6mm In A Plastic BoxUS FASTPER

The plastic case/index is too stiff. Other than using a screwdriver to open it (and partially damage the case) it works.

Nice variety of teeny tiny drill bits. The only watch out is that the clear lid is not meant to be all the way open like the picture shows. It's actually a neat design - there is a little hole on the side where the demarcations are. You slide the top so the hole lines up with the bit you want and you can slide out the individual bit.

Was what I was expecting. There were only two things wrong with this kit:1. The drill bits where sorted backwards from the case.2. One of drill bits was not usable due to damage from manufacturing.I do highly recommend this drill bit set for jetting, it worked perfect. And luckily I didn't need the drill bit that was damaged.

Don't know what these are. Some of the smaller bits are close in the 70 to 81 range. The larger bits are no where close. Much much larger than the numbered equivalents. They are advertised as both SAE numbered bits and equivalent metric sizes. Nope. I suspect a well meaning mumbly looked at the similar cases and concluded they were the same.

I haven't been able to use them since the mini-drill bit holder didn't arrive.

The drills themselves, they're okay. Yes they're fragile but what do you expect for something that small; you have to be careful or they will break/bend. The big issue I have with this set is the case. Another reviewer mentioned that the case cover is supposed to slide to expose a single drill at a time. Mine does not slide. The only way I can get to a drill bit is to remove the cover, which unless I'm extremely careful will result in tiny bits being sprayed all over the work area. Shame, because it would be a clever idea if it worked.

The case is fine and works quite well. Ya need to take it off gently then replace it so the bits are covered and it slides easy as pie. The bits are just what I need to drill soft wood. The small ones will break if you push to hard

Was very satisfied with the prompt service and of course with the Product will use them again and will recommend to others.