I was using this for subcutaneous fluid therapy for my cat. I've been using it for a little over two months. I'm selling it as a set with a Shinwa 1kg hanging scale. This scale is very convenient because it gives you a general idea of the amount of fluids being administered. This is a used item, so please refrain from purchasing if you are concerned about minor details. Packaging will be done with recycled materials. Nihon Medical Next Pressure Bag 500ml IN8000K & Shinwa Sokutei Hand Scale Flat Scale Plate 1kg 74452 Dog Cat Kidney Disease IV Therapy Pet Subcutaneous Fluids Spring Balance