double drum winch :fore-and-aft drum,right-and- ... fall, with various speed and capacity cheap and safe double drum winch :fore-and-aft drum,right-and-left ... site.cheap and safe. 2JKL series ,fore-and-aft double drum winches, fast speed, free fall.This series winch ... are applicable for bridge, port building, traction of shipyard, electric power construction, wire rope long distance pulling and long ...