Dewalt DWAR6114 6 In 14 TPI Heavy Metal Bi-Metal Reciprocating Saw Blades - 5PK. Made in the U.S.A. with global materials, these reciprocating saw blades last up to 50% longer* and feature a patented toothform that delivers fast, smooth cuts. The Bi-Metal Blades feature a tall profile for added durability in metal demolition applications.