Plastic Hose Barb Fitting All Sizes : 10 sizes of outer diameter and Total 30pcs plastic Hose Barb Fittings, Hose Barb Fittings kit, Hose Barb Fittings assortment: 3Pcs 5/32"x5/32", 3Pcs 7/32"x7/32", 3Pcs 3/16"x3/16", 3Pcs 5/16"x5/16", 3Pcs 7/16"x7/16", 3Pcs 3/8"x3/8", 3Pcs 5/8"x5/8", 3Pcs 1/4"x1/4", 3Pcs1/2"x1/2", 3Pcs 3/4"x3/4". Almost all sizes are to accommodate different pipe diameters. Material: The 3/4"x3/4" barbed hose fittings are made of milky white PE (polyethylene) plastic, and other Hose Barb Fittings assortment are made of PP polypropylene plastic, they are durable, strong, water resistant, -resistant materials to assure long life. Working Temperature & Pressure: 1. Translucent PP (polypropylene) temperature range: -22 °F to 284 °F. It is resistant to corrosion by acid, alkali, salt solution and various organic solvents below 176 °F, and can be decomposed under high temperature and oxidation. The melting point is 329 °F, and it softens at about 311 °F. 2. Milky white PE (polyethylene) temperature range: -76 °F to 197.6 °F. Melting point is 233.6°F. Easy Installation: The Hose Barb Fittings kit is easy to install without glue, or other tools required. Barbed ends grab the tubing tightly that won't leak; If necessary, you can use a heat or blower to soften the end of the tube before inserting it, after cooling, the tube will remain tight. Wide Application: Pipe connectors Suitable for applications in pharmaceutical, food and beverage, laboratory, processing and others, Aquarium Adapters Gas Liquid . Beautiful packaging: Straight 2way equal diameter hose connector, 10 sizes, a total of 30pcs of Hose Barb Fittings assortments, a great value package, packed in a pp , easy for you to access and storage