The tread plate is designed to meet the requirment in different
angles and lifting height when the door is installed. Insert the
splint to the bottom of the door, tread the red marking area with
tiptoe and the black rubber cushion with heel, to adjust the
lifting height. This tool is made of high-quality carbon steel and
has surface sprayed with zinc, so it is not only superior in
quality and stability, but also attractive in appearance.