My wife has type 2 diabetes for 10 years and she needs to inject insulin three times a day. In Germany, you cannot just throw used needle tips wherever you want. You have to collect the used needles in medical waste bins and hand them over to a pharmacy or hospital on a monthly basis. SafeFine saved us from this problem and offered a perfect solution. After using the needle tip, the box stores used needles internally. When there are no more new needle tips inside the box, I just give it to my pharmacist and purchase a new box. It is really practical and convenient for us.