Nylon Sleeve Hammer Set Plastic Expansion Anchor Round Head Nail Fixing Plugs Zinc Nail for Exterior Application Product Description The Zinc Nail Nylon Sleeve Hammer-Set Plastic Expansion Anchor is upgraded with a hot-dip zinc-plated steel nail for superior corrosion resistance, making it the recommended choice for exterior and outdoor anchoring applications where exposure to rain, humidity, and temperature fluctuations can cause standard steel nails to rust and stain