This is the most fantastic set I have ever used since I became diabetic 2 + years ago. Since I am type 2 I don't take insulin, so I have no needles to dispose of. The multiclick holds the used lancet needle in their own cartridge, so I can safely dispose of them in the trash. Its really nice not to carry around a bunch of used lancet needles. Also to turn the handle to change the needle is great. The needles come in a cartridge about the size of a small thimble and holds 6 needles each. This system is a real time saver.