Be ready for a variety of wood and metal-cutting applications with the DeWALT 10 pc. Bi-Metal Reciprocating Saw Blade Set with Case. Each bi-metal reciprocating saw blade set contains a selection of blades for common applications. These bi-metal reciprocating saw blades feature reinforced teeth to withstand nails and other foreign objects and a 6-degree angle for fast, aggressive cuts. The bi-metal reciprocating saw blade set comes with a durable Tough case designed to fit power tool kit boxes. These bi-metal reciprocating saw blades last up to 50% longer and feature patented tooth forms that deliver fast, smooth cuts in wood and metal-cutting applications.