The DeWalt DX3821 is a diamond segmented blade designed for cutting hard materials like concrete, brick, block, pavers, and stone. Here are the full details:

• Manufacturer: DeWalt
• Model: DX3821
• Blade Type: Segmented diamond blade
• Size: 4.5 inches (114.3 mm) in diameter
• Arbor Size: Typically 7/8 inch (22.23 mm), often with an included 5/8 inch (15.88 mm) adapter for compatibility with various tools
• Application:
  • Specifically designed for cutting:
    • Concrete
    • Brick
    • Block
    • Pavers
    • Stone
• Features:
  • Segmented Rim: Provides efficient cooling and reduced dust generation, allowing for aggressive cutting with less risk of overheating.
  • High-Performance Diamond Matrix: Ensures long-lasting blade life and effective material removal.
  • Versatility: Suitable for both wet and dry cutting applications, offering flexibility for different job site conditions.
  • Durability: Engineered to withstand the rigors of heavy-duty cutting tasks, ensuring a long lifespan even under tough conditions.
  • Fast Cutting: Optimized for fast, smooth, and precise cuts, improving overall productivity.
• Usage:
  • Ideal for use with angle grinders, circular saws, and other compatible power tools.
  • Favored by construction professionals, masons, and DIY enthusiasts for reliable and efficient cutting performance in various concrete and masonry projects.

The DeWalt DX3821 is highly valued for its balance of durability, efficiency, and versatility, making it a preferred choice for demanding cutting applications in construction and renovation projects.