This is our preferred tubing for use in Barrel Topping Systems. Because of its high elasticity this tubing is easy to attach to/detach from barbed fittings without having to cut the tubing to remove it or use hose clamps to install it (in low pressure applications). This feature allows the user to disassemble the tubing set used to deliver the top-up wine for both sanitation as well as cleaning after use. Cleans up easily and does not get stiff at low temperatures. OD is approximately 3/8"