Features: Designed for machine applications with high airflow demands Can be used with air compressors and air tools Help maintain a constant flow of air and pressure within hoses Specification: 1 x Universal Type Coupler, 1/4" Male 1 x Universal Type Coupler, 1/4" Female 2 x Germany Type Plug, 1/4" Male 2 x Germany Type Plug, 1/4" Female