●Package includes: 3×L +3×T +3×I +3×Y 4mm pneumatic cylindrical +10M PU pneumatic hose. ●Material: made of polyurethane, smooth and low friction, long service life. ●Flexibility: These connectors can be used for PU tubing, the push-quick assembly can be rotated 360°. ●Matching Parts: release ring with oval design, these pneumatic fittings are more convenient to disassemble, convenient pneumatic quick coupling for your daily life. A variety of connectors are included, so you can connect quickly and easily. ●Product advantages: good bending process, not easy to deform, good corrosion resistance and oil resistance. Temperature range: -60°C to max. +100 °C