FREEZE FROST EXPANSION PLUGS STRUCTURE: 1. Hex Nut × 1; 2. Steel Plate × 1; 3. Neoprene Rubber × 1; 4. Steel Chassis × 1; 5.O-ring × 1; 6. Steel Carriage Bolt × 1;. EASY TO INSTALL: The quick seal expansion plug, with precise size, are easy to install.
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