... double drum wind. 2,applicable for free fall punching and piling 3,mainly use in construction site, ... , factory, mine, port, especially suitable for free fall punching & piling for bridge, dock, construction works and so ... on.This winch can operate by hand and motor, it can be hand controlled without electric power. Pls see ... ×2375×17002935×2080×1550Machine weight KW70005000 punching and piling hoist