I use the large 8.2 quart Sharps container for my insulin pens and I use this one to dispose of my pen needles and lancets. There is a place where you put in the pen and the needs will unscrew and fall into the container. I bought this product at my local Walmart, but I had to order the larger container online. I use this one for my needles so my larger container lasts longer. My larger container stores my pens only. A great dual system. It is really nice that you can unscrew the needle without every having to touch the needle. Very slick.














