Double Ear Clamp 1517. These are meant for a harder jacket hose like the blue whip hoses I built for my reel setup here at OGHQ. I don't sell this hose anymore (just use Stoflex), but I have some of these clamps in the store still. If you need clamps for Stoflex hose, you want these: Prevost 1518 Ear Clamp.
Min/Max (In): 0.59-0.67