Great Value Kit -- Package includes 20pcs M4 toggle bolts and wing nuts, enough quantity for your daily use. The thread diameter of bolt is M4 (3.9mm/5/32"), and its length is 60mm/2.36".Satisfactory After-Sales Service -- is devoted to providing high quality service. Please feel free to contact us if the item has any quality problem. Your satisfaction is our biggest power.Widely Application -- The toggle bolt set offers a reliable anchoring effect, solving most of light duty anchoring in household. Widely used in drywalls, hollow walls, wood boards, plaster walls, thin walls and others hollow substrates.Easy Installation -- First drill a hole which is large enough to pass through the collapsed wing nut. Then thread the bolt through the hole and the wing will be stuck inside. And then pull the bolt back and tighten it with a screwdriver.Premium Material -- The toggle bolt kit is made of high quality carbon steel with zinc plating, corrosion and rust resistant, not easy to break, durable for use. Smooth surface without burr for exquisite apprearance.