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Feature: 1. Made of high quality steel, durable to use. 2. Exquisite workmanship, not easy to rust. 3. The maximum diameter test tube that can hold is less than 5cm. 4. It can protect your hand when doing a experiment. 5. Used for holding test tube in the laboratory. Specification: Condition: 100% Brand New Material: Steel Weight: Approx. 112g / 4.0oz Whole Length: Approx. 14.5cm / 5.7in Package List: 5 * Test Tube Steel Clip Notice: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.