The package includes 100 female luer bulkhead barbed fittings+nut +washer+ male luer, which are sufficient for your daily use or replacement. 1500 Luer Lock Fittings Male Luer Integral Lock Nut To Hose Barb Tubing Connector Luer Lock Pipe Fittings The female luer bulkhead fitting is widely used in medical equipment, laboratory equipment, fluid transmission equipment, etc., , Female luer bulkhead barbed fittings are made of high-quality PP material, , which are safe, non-toxic, tasteless, and durable. Luer Lock Barb Fittings Plastic and metal barbed fittings designed to fit a range of tube sizes. Either barb to male luer lock or barb to female luer lock type. Suitable for use with metering valves, pressure pots, cartridges and syringe barrels. Safe for use under pressure to 100 psi and simple to attach to our full range of plastic feed tubing. Silicone-free materials Adhesive Dispensing Ltd... OEM female luer bulkhead available! ApplicationFor connecting hoses or convert connections in pipeline systems of medical devices, analytical instruments, aquarium equipment, ceramic equipment, environmental protection, water treatment, biochemical industry, inkjet printing and other industriesMedical device domain, Food and beverage, environment protection, laboratory etc  Size selection   1/16 male luer 1.6mm   1/16 female luer 1.6mm    for hose inner diameter 1.0-1.6mm   3/32 male luer 2.4mm   3/32 female luer 2.4mm    for hose inner diameter 2.0-2.4mm    1/8 male luer 3.2mm    1/8 female luer 3.2mm    for hose inner diameter 3.0-3.5mm    5/32 male luer 4.0mm   5/32 female luer 4.0mm    for hose inner diameter 3.8-4.0mm    3/16 male luer 4.8mm   3/16 female luer 4.8mm    for hose inner diameter 4.5-5.0mm   1/4 male luer  6.4mm   1/4 female luer 6.4mm    for hose inner diameter 6.0-6.4mm The size of the female luer bulkhead fitting is 1/16 to 5/32, for example, you choose 1/16 if your tubing inner diameter is 1., 6mm. which can meet your different needs. The plug-in design is convenient and easy to use. Female Luer to Barbed Adapters – Intralab They are perfect for a variety of applications, including food and beverage processing, laboratory testing, and medical equipment.