Material: quality POM plastic, good elasticity and clamping force Dimensions: 36 x 24 x 17 mm - Tube outer diameter: 6-12 mm 6 adjustable liquid levels, control the flow of liquid in the tube, you can also end the flow of liquid in the tube. Suitable for beer brewing, wine siphon process control, laboratories, industry chemical, simple and practical Contents: 5 pliers Attention: the tubes for which you use the clamp must be flexible tubes and the thickness of the tubes must be greater than 0.5 mm