10Pcs Nylon Plate Board Cavity Wall Plug Fixing Speed A Anchor With Screws. Feature: -Gypsum board expansion screws spiral wall plug. -Environmentally friendly materials, good toughness, impact resistance, not broken. -Expansion coefficient, accurate and efficient installation. -Anti-Corrosion and aging. -And supporting the use of screws, the tool can be used directly precessing spin out, placed in gypsum board, and then the thing with screws. -Substrate: gypsum board, insulation board. -Applicable appliances, lighting, lamps, light mirror cabinets and other wall material. Specifications: Product name: Expansion Screw; Material: Nylon; Color: White; Quantity: 10pcs; Package Include: 10x Expansion Screws. Attention 001 is 3.5x25mm screw; 002 is 4.2x25mm screw; 003 is 4.2x32mm screw; All plasterboard Fixings are in the same size:13x40mm; Please check your choice before placing an order.Thank you very much