There were zero instructions on how to use it. It sort of works with the normal lancets, but not really. It doesn't and you can't return it.

This 30g size lancet works as expected. These purple lancets come 500 to a box so you get plenty and they are very inexpensive. I am not diabetic but i am aware of my sugar.

Use these for popping zits and its a game changer. Perfect for zits. I also like to use them to * a spot in small blemishes and then cover with an acne patch so they drain.

Not a good product is not universal, is less likely to fit any device that it claims to fit. Does not fit any one touch products at all. They are much too thick.