AHJ-10VHD-DPATLAS™ 10 Set Back Hydraulic Jack Plate - Heavy Duty T-H Marine’s ATLAS™ Hydraulic Jack Plate is now available in a “HEAVY DUTY” upgrade.T-H Marine’s ATLAS™ Hydraulic Jack Plate is the #1 selling jack plate in the world and the #1 Choice by fishing professionals and boat manufacturers. With the ATLAS™ HEAVY DUTY, the product is available for applications on even larger outboards, rated for engines up to 400 hp. 5 REASONS YOU SHOULD CHOOSE THE ATLAS™ HYDRAULIC JACK PLATE ATLAS™ is truly the best