Made of premium bamboo material, which is and practical for the lasting use. Perfect for laboratory experiment and experimental lesson. It comes with lightweight, provides convenience to use. Features the long handle, which can efficiently your safety. The material enjoys the strong durability, which has heat resistance. Features - ColorBeige - Material: Bamboo. - Size: 18.00X1.50X1.20 cm/ 7.07X0.59X0.47 inch. - This item is a test tube clamp, which is made of and for long-term use. - Features heat resistance, which has high durability and reliability. - Lightweight design, provides convenience to use. - This test tube holder will not do damage to the test tube. It is a must-have supply for labs, school. - Comes with a long handle, which can keep you from the test tube and keep you safe. Package list: 20 tube clamps