Package includes: 150 pieces plastic anchors + 150 pieces screws (total 300 pieces), sufficient quantity, can meet various needs. Advantages: Expansion screws can be installed on the gypsum board, which is simple to use and beautiful indeed. Can save more time. Durable: The plastic anchor is very durable. The self-drilling plasterboard screw set is made of high quality stainless steel, which is very durable and not easy to break. It has good corrosion resistance in harsh environments such as high temperature and cold weather. Perfect design: When tightening the screw, the space in the ribbed anchor is expanded on two opposite sides, which increases the fastening force and widens the anti-rotation design of the sleeve. It will not spin when the drill is spinning. Quickly tighten the screws. Application: plasterboard, fiberboard, hollow board, etc., for curtains, lamps, cross stitches, frames, ornaments, decorative pieces, etc.