Our laboratory clamp supports and test tube holders are designed for ease of use and reliability. They feature a robust construction that can handle the demands of frequent laboratory use. These clamps are for securing test tubes and other glassware in the lab. Features -Color:Silver -Material:Iron -Size:19.20X2.50X2.00cm/7.55X0.98X0.79in -Wide compatibility: for securing a variety of lab equipment including flasks and test tubes, enhancing lab efficiency -Robust build: features iron stands and clamps that are built to last, providing a stable and secure setup -Convenient clamp mechanism: the clamps have a convenient mechanism for easy attachment and detachment of lab equipment -Effortless operation: the straightforward design allows for quick and easy use, suitable for all laboratory environments -Stable support: offers stable support and a secure grip, making it easy to handle irregularly shaped items Package list: 1 tube clamp