I'd go for the 7/16 tubing to be honest mate,i tried the 3/8 and had a right ball ache of a time,and it just wouldnt stretch far enough over the 1/2 barbs without splitting.
I'd go for the 7/16 tubing to be honest mate,i tried the 3/8 and had a right ball ache of a time,and it just wouldnt stretch far enough over the 1/2 barbs without splitting.