You are buying  1 Foot of 1/2 inch inside diameter Transflow Tubing. This size hose is commonly used as an air line. It will fit onto a stallcock. This hose meets all sanitary guidelines. Shipping will be Free Priority Mail. to USA locations. The more you get the less the shipping will be. Also we have different sizes of milk tubing and vacuum line tubing. Please contact me about other sizes and lengths. We stock almost every size available. Thank you for looking.