Push-in fittings are an excellent choice for those looking to simplify their pneumatic setups. The connectors allow for quick and easy assembly, eliminating the need for additional tools or equipment. This makes them ideal for both professional and DIY projects, ensuring a easy experience. Features -Color:Multi -Material:PU and plastic -Size:4.50X2.00X2.00cm/1.77X0.79X0.79in -Size:4.30X1.80X1.80cm/1.69X0.71X0.71in -Size:3.70X1.90X1.90cm/1.45X0.75X0.75in -Size:3.60X1.10X1.10cm/1.41X0.43X0.43in -Note: Suitable for diameter tubes: 1/2", 3/8", 5/16", 1/4" -Fast release: the quick release design allows for fast and easy connections, simplifying pneumatic operations -Two way flow: supports bidirectional air flow, making it adaptable for various pneumatic systems -Flexible compatibility: fits various tubes, providing flexibility in tube connections -Sturdy construction: made from pu and plastic, ensuring durability and longterm use -Comprehensive kit: offering a complete solution for multiple pneumatic connections Package list: 40 x pneumatic connectors