3 Fingers Design-Wrapped finger can hold beaker tightly, not easy to fall off. The finger opening can be adjusted to fit different specifications of beakers. Delicate Design-Covered pins would not leave any scratches on objects.The adjustable clamp base can be easily fixed on one edge of the table. Safe to Use-Extension rod design makes the experiment process more secure. Sturdy and - plating treatment, rustproof and anti-. Practical Experiment Fixing Accessories-Our laboratory beaker clamp is a good laboratory assistant, and very practical, for school, laboratory. size:28cm Material:Metal colour:Red+silver Package Contents: 4 x Three-jaw Clamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.