This product is a test tube clamp, which is made of durable iron and wood material, with good texture, sturdy and practical. Easy to install and use, it can be easily applied to your glass tube, a very practical accessory that will meet your needs well. Features -Color:Khaki -Material:Wood, iron -Size:18.00X1.50X1.20cm/7.07X0.59X0.47in -Made of durable wood material, this bamboo tube clip is a test tube clamp that can be used for long periods of time. -With its high durability and reliability, this tube clamp is both sturdy and practical. -Featuring excellent craftsmanship and an innovative design, this test tube holder is both popular and functional. -This tube fixed clamp is designed to securely hold test tubes without causing any damage, making it an essential tool for labs and schools. -Its simple structure design ensures safety and reliability, keeping you away from the test tube and preventing accidents. Package list: 20 x clamps