Clamps for corrugated pipes are available in many sizes suitable for different nominal diameters and are equipped with a fir tree fastening designed for quick insertion into a drilled hole. Thanks to the multiple lamellas of the fir tree fastening, these clamps can also be mounted in non-through holes. The pipe is snapped into the clamp, which provides a secure attachment. The profile of the clamp has an internal collar that prevents the pipe from sliding in the clamp. CTC clamps are used, for example, in the automotive and electrical industries, for the production of harnesses, and anywhere corrugated pipes need to be quickly and securely attached.