This test tube clamp is solid and sturdy, which can withstand long-lasting use. Features the wood, iron material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This glass test tube clamp will make fixing test tube easier and smoother. Features -Color:Khaki -Material:Wood, iron -Size:18.00X1.50X1.20cm/7.07X0.59X0.47in -This test tube clamp is able to withstand high temperatures and resist corrosion, making it a and reliable choice for laboratory use. - test tube clamp securely grips tubes of various sizes, ensuring they stay in place during experiments or storage. -With its easy-to- , this glass test tube clip allows for quick and efficient organization of test tubes and other items. -The glass test tube clamp is also easy to clean and maintain, ensuring a clean and safe laboratory environment. -This test tube clip tool is an ideal choice for a variety of experiments and storage needs. Package list: 20 x clamps