Clamps have a slotted screw. Tighten with a slotted screwdriver, hex nut driver, or a wrench.

A raised safety collar around the head of the screw prevents your screwdriver from slipping and damaging the hose or tube.

Here's everything you need to make your own 3" diameter and larger custom-length worm-drive clamps.

These clamps are easier to install than worm-drive clamps—crimp the pinch points with pinch-clamp pincers for a secure hold. They are also known as ear clamps.

Unlike other pinch clamps, these have a unique tongue-and-groove design that creates a gap-free seal to reduce leaks.

Installing these clamps is a snap—push their interlocking teeth together with your fingers, then squeeze tight with pliers. To remove, use pliers to push sideways and separate the teeth.

Clamps offer extra holding power in high-torque applications.

These clamps have a wider band than other constant-tension clamps, which provides more coverage and reduces the chance of leaks.