This size of 20ml is difficult to find. I needed a feeding syringe for my older dog. I bought the 35 ml Lixit pet feeding syringe, but it is so large and difficult to use. Their 10ml was too small. I finally found these on Amazon. Worth every penny. I just ordered more. I imagine this size could be used for other purposes around the house, too. I know they are for industrial purposes and are not recommended to reuse, but they work for me.