ToolPro's 4 Inch Eye Lag Toggle Assembly Screws are designed for heavy-duty overhead applications, such as hanging suspended ceiling wire. Ideal for use with plaster, clay tile, or other hollow substrates, these toggle assemblies ensure secure anchoring. Simply drill a 5/8 inch hole, insert the winged end through drywall or acoustical tile, and let it expand behind the surface. The 1/4 inch x 1-1/4 inch fender washer and hex nut securely anchor the assembly externally. Each assembly includes a 1/4-20 eye lag toggle bolt, a 1/4 inch washer, and a 1/4 inch toggle wing, all zinc-coated for durability. Perfect for demanding applications, each box contains 100 assemblies.