Expanded wing double face corner. Plastic corner bead normally use in interior wall corner to reinforce the corner to as to avoid unexpected damage. And at the same time, the preformated angle of the bead can easy have a neat and strong corner. The Plastic corner bead can keey rust away For our metal bead, the material can be zinc-plated, hot-dip, Al, S/S, In case you order this product, we need to know the material, the width of the two wings, thickness, the spec of the nose, the size of the hole, etc.. or just your sample, we can do as per your special requirement. Normally one piece of the finally products would be 2700mm to 3000mm, and packed 25 pcs per box/carton.