Clamp for balloons

For experiments on air pressure or for vacuum experiments, if a recipient or vacuum vessel is evacuated, a sealed balloon becomes larger;
Robust plastic clip for quick, airtight sealing of a balloon, but the clip can be opened again just as quickly and easily, the balloon remains intact and can therefore be used often
Dimensions: approx. 70 x 7 x 15 mm
Weight: approx. 3 g

additionally recommended:
P1410-1Lf Balloons, small, set of 2