The SP20 quick-connect coupler set is an essential tool for anyone working with pneumatic systems. Its robust design and self-locking feature provide a secure and reliable connection, while the easy-to-use design ensures quick and effortless tool changes. This coupler set is ideal for professionals who demand high performance and durability from their tools. Features -Color:Black -Material:Plastic steel -Size:6.40X2.00X2.00cm/2.52X0.79X0.79in -Size:4.80X1.60X1.60cm/1.89X0.63X0.63in -Quick and convenient: the sp20 pneumatic tool coupler features a selflocking ctype system, allowing for fast and easy connections. - durability: made from robust plastic steel, this coupler offers excellent durability and longterm reliability. -Multiindustry use: suitable for various pneumatic tools, it is ideal for use in construction, machinery, automotive, and other sectors. -Secure and stable: the selflocking design ensures a firm connection that remains stable during use, ensuring safety. -Efficiency : the feature operations, reducing the time spent on tool changes and boosting productivity. Package list: 4 pairs x and female connectors