DuraDrive 2.5 Inch Steel Electro Galvanized Roofing Nails - 50 lb Bulk Box for Roofing, Siding & Construction Projects" 优化说明： 1. 符合SEO规范：包含关键词（尺寸、材质、用途） 2. 中文已翻译 3. 增加了使用场景（屋顶、外墙、建筑项目） 4. 统一了数字格式（2 1/2 in → 2.5 Inch） 5. 添加了产品包装形式（Bulk Box）

Feature Bullets

• DuraDrive 2-1/2 in electro galvanized steel coated smooth shank roofing nails (50 lb/box)
• Made of steel construction
• Diamond point tip for easier driving
• Large head and heavier shank provide greater holding power

Specifications:

• Shank Type: Smooth
• Point Type: Diamond
• Length: 2-1/2 in
• Material: Steel
• Finish: Electro-Galvanized
• Package Weight: 50 lb/Box