Ouick Oil Change Question

Does anyone know with the safe air quick change valve what diameter tubing you need to slip over the fitting for draining the oil? I am guessing about 3/8 inch inside diameter but wanted to pick some tubing up on the way out to the airport.

Thanks!
George

use 1/2 "

may have to neck down the top a bit with a couple wraps of safety wire.

The larger diameter flows better.

George: I use 3/8" ID for the drain hose. Dan