The IRWIN 372618P5 Reciprocating Bi-Metal Saw Blades are a pack of 5 high-quality blades designed for commercial truck use. With a 6-inch length and 18 TPI, these blades are perfect for cutting through tough materials with ease. Manufactured by IRWIN, a trusted brand in the industry, these saw blades are reliable and durable for all your cutting needs. Ideal for professionals and DIY enthusiasts alike, this pack of saw blades is a must-have for any workshop or job site.