For a secure, leak-proof clamp, you can’t beat Oetiker. These stainless steel (304 grade) one-ear clamps are adjustable within a 28.6 mm (closed) to 35.0 mm (open) inner diameter range, so one size covers a few needs. The radial guiding tab keeps the band aligned during installation for a smooth, even seal all around. The ear design makes installation quick with the right pincers (like Oetiker HIP tools), and the visible deformation shows you it’s properly closed. They’re corrosion-resistant, super reliable, and perfect for automotive, marine, industrial, or home DIY projects involving fuel lines, coolant hoses, or air lines. This pack of 25 means you’ll have plenty on hand. Just remember, these aren’t for PEX plumbing—use Oetiker’s PEX clamps for that. Professional quality without the professional price.