I've a pack of these from the original indiegogo campaign (after the original kickstarter cockup). I broke the one I was using in my 3DS, which 50% matched the colour (eventually the plastic where the wedge widens gets brittle and cracks). I need to investigate whether I can reinforce it successfully (superglue's not strong enough), but I've broken most of my fine drill bits, so need to get some more before I can try that out. The second out of the packet broke almost immediately, so I'm not sure if the plastic has got more brittle with age or I was just unlucky. I've not tried using the other two ones until I've tried reinforcing one of the broken ones and finding out if I can manage that.