General description 4X Universal Emergency Brake Air Hose Coupling Connectors and Gladhand Service Parts Happy Hands for Semi-Trucks Trailers RV. This product includes 2 extra gaskets to ensure optimal performance. The connectors are designed to prevent leaks, which are often caused by wear and tear on high-quality materials. The extra washers help maintain the happy hands in excellent working condition, providing a cost-effective solution. Technical specifications Connection size: 1/2 NPT port Dimensions: 4.1 inches x 2.2 inches Material: Aluminum Color: Red + Blue Compatibility and accessories Compatible with service and emergency (polarized) or universal (non-polarized) configurations Replaces for 1011EF / 1011SF, Velvac 035042 / 035045, and 278850 / 278851 Package Contents: 8 x Happy Hand Seals, 16 x O-Rings Other information The gaskets are made of high-quality rubber, providing strong aging resistance to effectively prevent air leakage. The high-hardness steel clamp plates and