If you are looking for a professional air pump adapter, then your research is over here. That's because our product can meet your need. Adopted of solid material, practical and durable for long time use, not easy to get deformed and bring you much convenience. Features -Color:Black -Material:ABS -Size:5.00X4.50X4.50cm/1.97X1.77X1.77in -Size:3.40X3.10X2.70cm/1.34X1.22X1.06in -Size:3.30X2.90X2.20cm/1.30X1.14X0.86in -Size:5.40X3.00X2.70cm/2.12X1.18X1.06in - Wide Application: This multi-functional valve connector is suitable for a variety of inflatable products, including kayaks, rubber boats, gymnastics mats, and surfboards. - Dual Function Design: This air pump attachment can be used for both inflation and deflation, making it convenient and practical. - Durable Material: Made of high strength ABS material, this air pump hose adaptor is durable and reliable. - Tight Connection: The pump adapter is designed to fit tightly, preventing any air leaks. - Small and compact size, light in weight, you can carry and use it wherever you go. Package list: 4 x adapters