The product is easy to use</br>The product is durable</br>The product is manufactured in United States</br>Thin kerf for up to 35% more cuts per charge vs. leading reciprocating saw blades</br>Short blade length for cutting in tight locations</br>Bi-metal construction for increased tooth durability and long blade life</br>Cuts plaster?? plaster with metal lath and plasterboard; cuts on forward and backward stroke</br></br>Product Description</br></br>HACKZALL BLADE 4"PLASTER & DRYWALL. The product is easy to use. The product is durable. The product is manufactured in United States.</br><br/>http://www.amazon.com/gp/product/B001IZKMX6b