MetalTech 21.75 in. x 10 in. x 16.75 in. Aluminum Adjustable 2-Rung Ladder Jacks for Scaffold Extension Boards, Ladder or Plank

The MetalTech E-LJ20 2-rung ladders jacks are compatible on either side of the ladder. Can be used with planks up to 18 ft. W and are welded and riveted for added safety. Supports up to 250 lbs. and offers 8 notches of angle adjustment.