Looking for worm drive clamps for 1/2 inch ID tubing? We sell Swiftech Worm Drive Clamps. These high quality clamps will apply precise and accurate sealing pressure on your tubing to ensure to ensure there is no leakage. Don't settle for low quality products because they can cause hundreds in damage if coolant leaks out of your tubes. Settle for only high quality by purchasing one of our genuine Swiftech worm drive clamps now.