These points have messed up a set of my darts, I followed all instructions and videos before purchasing, when they turned up I was so exited to put them in, I got my caliper out and started measuring up my current points vs the ones I intended to put in, found the supposedly correct size, first the tool snapped with abit of the thread on the insert then the next one went in wonky, bear in mind I have re pointedso many darts I know my tool spot on. I did try to contact the supplier however I haven’t had a response so that’s not great 👍🏼