1/4 Inch Toggle Bolt and Wing Nut Assortment ? Secure, Durable, and Versatile ?Comprehensive Set?: Includes 20 toggle bolts and wing nuts, with each piece engraved for easy size identification. Designed to handle a variety of applications, this set ensures you have the right tools for secure installations. ?High-Quality Carbon Steel Construction?: Made from premium carbon steel, these toggle bolts are built to last. Their galvanized surface provides exceptional resistance to corrosion, ensuring long-lasting durability even in challenging environments. ?Effortless Installation?: Simplify your setup with an easy three-step process: drill a hole, insert the spring-loaded wings, and tighten the bolts. The spring-action mechanism ensures a secure and stable connection to hollow surfaces. ?Innovative Butterfly Wing Design?: Featuring spreading butterfly wing nuts, these anchors expand automatically upon insertion into hollow materials. This unique design enhances the thrust surface area, delivering superior load-bearing capacity for heavy-duty applications. ?Wide Range of Applications?: These toggle bolts are ideal for securing fixtures to hollow brick, gypsum board, cement fiberboard, wood boards, and other hollow substrates. Perfect for hanging curtain rods, towel bars, light fixtures, shelves, flower pots, coat racks, projectors, and more.