21.75 in. x 10 in. x 29 in. Aluminum Adjustable 3-Rung Ladder Jacks for Scaffold Extension Walk Boards or Ladder, 2-Pack

These MetalTech 3 rungs ladders jacks comes in a box of 2 jacks. They are compatible on either side of the ladder. Can be used with planks up to 18 ft. wide and are welded and riveted for added safety. Supports up to 250 lb. and offers 8 notches of angle adjustment.