Features: Package Content: You will receive 10 sets of 3/16 thru-bulk barbed bulkhead fittings, each set includes a thru-bulk barbed bulkhead fitting, a hexagon threaded nut and a gaskets. They can fit 3/16" hose inner diameter perfectly. Quality Material: Our 3/16 thru-bulk bulkhead fittings are produced of good quality PP material, sturdy and long-lasting, ensuring long-time service. Product Feature: With smooth surfaceand inner wall; light in weight and small in volume. Excellent craftsmanship makes them more durable. They can well withstands the pressure of 125PSI and the temperature from -9F / -22.8C to 176F / 80C. but please note that they are not oil-proof. How to Use: Firstly, reserve hole to ensure that the hose fitting can pass through the panel from one side of panel; then, tighten the hexagon threaded nut from another side of panel; next, install gaskets to prevent leakage; lastly, connect hoses (not included). Versatile: The 3/16 thru-bulk bulkhead fittings can be widely applies for home aquarium, fish tank, garden, laboratory, food and beverage factory, etc. Specifications: Material: plastic Pipe diameter: 1.6mm/2.4mm/3.2mm/4.0mm(optional) Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 10 set Hose Barb Fittings