Qualcraft 2430 Aluminum 3 Rung Long Body Ladder Jack The Qualcraft Aluminum Ladder Jack will accommodate up to an 18-Inch wide plank The Aluminum Ladder Jack can be used inside or outside ladder face The Aluminum Ladder Jack is adjustable to fit round or D-rung ladders The Aluminum Ladder Jack has a capacity of 2 works plus 75-Pound between 2 ladders