These are DNV approved corrosion resistant perforated worm drive clamps. They are constructed from top quality 316L marine-grade stainless steel components. They provide excellent sealing capability when used with marine silicone hoses, while offering great flexibility as a general purpose clamp.
Suitable hose diameters are listed below, while the height of the clamp is either 12 mm or 9 mm and the thickness is 0.9 mm. This can make it easier to fit the clamps in situations where there is limited access.