Size:6mmx1/4PTSize:13mmx3/8PTSize:10mmx3/8PTSize:14mmx3/8PTSize:8mmx3/8PTSize:6mmx1/2PTSize:10mmx1/2PTWhat is this?The straight pipe fitting is commonly used to connect lines for air, water, fuel and gas in a quick and simple way.Are there any advantages of the product?Made of 304 stainless steel for corrosion and rust-resistant for enhanced durability.The barbed stems create a tight seal on the flexible and semi-rigid tubes when used with a pipe clamp(NOT Included).How to use it?The barb end can be used to connect hoses and tubing, the threaded end can be used to connect water pipes with external threads.What should I notice?Note: Before ordering, please confirm the right size. You can dip the end of the tubing/hose in hot water for a while for push-on installation easily.