Marine Air Winch for Sale 1.air winch for boat 2.huge hoisting capacity 3.material:Q235B,Q345D 4. ... , mobility strong, flexible operation and reliable.3practical strong, especially suitable for high humidity, inflammable, explosive, the rain and snow, etc. Various ... with * may be connected to Long-distance control device.Model marked with ** may be connected with Auto-brake device Air Winch for Sale