A hydraulic boom vang will provide maximum control over your boom during sailing and makes reefing and flaking of your mainsail easy as it also acts as a topping lift. The Holmatro boom vang combines power and ease of use with a high return force. The oil passage through the piston rod reduces the length of the hydraulic hose and therefore the risk of damage. In combination with our push button quick release you can dump the vang instantaneously.