The RECIP STRT 4 X 18 TPI (PK5) is a pack of five reciprocating saw blades designed for cutting through various materials. Each blade measures 4 inches in length with 18 teeth per inch (TPI), making them ideal for fast and efficient cutting in wood, metal, and plastic. The durable construction ensures longevity and performance, while the compatibility with standard reciprocating saws makes them a versatile addition to any toolkit. These blades meet industry standards for quality and are perfect for both professional and DIY projects.