Reciprocating saw blades have a long, narrow, and straight design. They typically feature a blade body made of high-carbon steel, bi-metal, or carbide for durability and cutting performance. The blade body is attached to a tang that fits into the chuck of the reciprocating saw. Tooth Configuration: Reciprocating saw blades have teeth along one edge of the blade. The tooth configuration can vary depending on the intended use and the material being cut. Some common tooth configurations include: Crosscutting: These blades have widely spaced teeth that are designed for cutting wood and other soft materials quickly. Demolition: These blades have a more aggressive tooth pattern with widely spaced and larger teeth. They are suitable for cutting through tough materials like nails, metal pipes, and drywall. Metal Cutting: Blades designed for cutting metal have smaller and more closely spaced teeth. They are capable of cutting through various types of metal, including steel, aluminum, and copper.