Boxonly Plastic Hose Barb Fittings Barbed Pipe Fittings 3.9mm Hose Barb M5 Thread Adapter Connector Elbow Joint Splicer Mender Adapter for Fuel Gas Liquid Air 10 PCS

["Made of durable plastic which is no fade, crack and longer lasting service.","Thread Specifications: M5 external thread, Inner Hole 3mm; Pagoda Front End Outer Diameter: 3.9mm; Pagoda Inner Diameter: 2mm. Please check the size carefully before purchasing.","Suitable for pharmaceutical, fooand beverage, laboratory, chemical processing and handing, and printing and labeling.","Barbed fitting creates a tight seal on flexible and semi-rigid hose when used with a hose clamp or crimp sleeve or ferrule.","Easy to install and not easy to drop off, good strength and durability."]