4164 - 4164: 产品细节图：[展示Z型试管架的图片] 产品性能：可容纳多支试管，稳固性好。 用材：优质塑料或金属，坚固耐用。 参数表： 型号：ASL-ST450-012 - ASL-ST450-017 管径：φ12.2mm50（012）、φ14.5mm50（014）、φ17.5mm*50（017） 材质：根据型号不同，可能为塑料或金属 型号：ASL-ST450-012 - ASL-ST450-017 用途：用于实验室中放置试管，方便实验操作。 包装：单个包装，便于运输和存储。 使用说明：将试管插入相应的孔中即可。 售后服务：如有质量问题，可联系售后解决。 Product Details Image: [Show the picture of the Z-type test tube rack] Product Performance: It can hold multiple test tubes and has good stability. Materials Used: High-quality plastic or metal, strong and durable. Parameter Table: Model: ASL-ST450-012 - ASL-ST450-017 Pipe Diameter: φ12.2mm50 (012), φ14.5mm50 (014), φ17.5mm*50 (017) Material: Depending on the model, it may be plastic or metal Model: ASL-ST450-012 - ASL-ST450-017 Usage: Used to place test tubes in the laboratory for convenient experimental operations. Packaging: Individually packaged for easy transportation and storage. Instructions for Use: Just insert the test tube into the corresponding hole. After-sales Service: If there is any quality problem, you can contact the after-sales service for solution. 4165 - 4167: 与4162 - 4164类似，不同之处在于管径和型号。 Similar to 4162 - 4164, the difference is the pipe diameter and model.