MATERIAL:Made of 100% Non- PP plastic,which is Lead free, , safety for potable drinking.and can resists most strong mineral acids and bases. APPLICATION:Suitable for aquarium air pump accessories,air tubing splitter,computer watercooling,pharmaceutical,fooand beverage,laboratory,chemical processing and handing,and printing and labeling. WORKING environment:Suitable for most working environments. But please pay attention to the working environment of the pipe. ADVANTAGE: The sturdy parts has smooth inner can reduce fluid friction and prevent accumulation, ensuring effective flow through the pipeline. Specification:3.9mm Color: As Shown Material: PP Package Contents: 30 x F-type Three Way Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.