Abstract: A clip for retaining together sheets of paper or other materials comprising a single thin strip of resilient sheet-like material bent upon itself to define an end fold and first and second holding legs each having first and second upper ends respectively interconnected at said end fold, said first and second holding legs each having first and second lower ends respectively opposite said end fold and said lower ends intersecting at an angle with respect to each other so as to define a reverse V-shaped push-on space and wherein at the position where the two push-on edges cross each other a space is created between the legs as a result of the fact that at least one of the clamping legs is provided with a non-angular depression.