This hose adapter is made of PP material, has high durability, not easy to deform. Fine workmanship, practicality. The connector, easy connection for you to use with needle tube. Simple structure and excellent craftsmanship make it easy to use and have excellent durability, will provide you with good service. Features -Color:Transparent -Material:PP -Size:1.00X1.00X2.20cm/0.39X0.39X0.86in -Inner thread: 3.2mm -Made from PP material, temperature resistance, chemical resistance, safe and stable to use. -The inverted hook design is unique, light and flexible, convenient and practical, it will be your . -Easy to use, good in seal and fit snugly, will not leak any of the liquids, convenient and simple to use. -Appropriate dimension is convenient for you to carry and store without taking too much space. -Our connector can be compatible with with luer lock needle tube, applied for craft and industrial work. Package list: 8 x Connectors