DEWALT Reciprocating Saw Blades, Straight Back, 8-Inch, 14 TPI, 5-Pack (DW4809) Product Description Lasting up to 50% longer*, these Metal-Cutting Reciprocating Saw Blades feature a patented toothform that delivers fast, smooth cuts for a range of metal cutting applications. Their Bi-Metal construction is designed to extend blade life and minimize blade breaks. -- The DeWalt DW4809 8-inch 14 TPI straight back bi-metal reciprocating saw blade is a tough blade that's built for cutting in heavy-gauge metal, hard rubber, fiberglass, and angle iron. This straight-back blade can also be used to cut a wide variety of materials, including wood, plastic, and drywall. In general, a lower tooth count cuts faster, but provides a rougher finish, and this 14 TPI (Teeth Per Inch) blade is no different. Each DW4809 features bi-metal construction with reinforced teeth for increased durability, anti-stick coating for reduced friction, and matrix II steel with 8-percent cobalt for longer blade life. In addition, this reciprocating blade features a +/- 3-degree shank angle for aggressive cuts, a raker tooth design for increased tooth contact area, and a patented tooth geometry for faster cut rates. Built from the toughest materials, the blade body is durable, yet flexible to reduce breaking. This all-purpose blade (sold in a pack of 5) will fit all brands of reciprocating saws. From the Manufacturer DeWalt DW4809 8-inch 14 TPI straight-back heavy-gauge bi-metal reciprocating saw blade, 5-pack Features UP TO 50% LONGER LIFE*: Patented toothforms optimize chip removal for efficient cutting and long life. *Average performance of DEWALT reciprocating saw blade range vs. prior generation DEWALT blades DURABLE BLADE DESIGN: Bi-metal construction delivers blade flexibility and a long-lasting cutting edge MADE IN THE U.S.A. WITH GLOBAL MATERIALS Patented tooth design utilizes sharper tooth geometry for faster cut rates Aggressive shank angle increases tooth contact, maintaining cutting speed as blade wears for longer blade life Specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts +/- 3-degree shank angle for aggressive cuts Raker tooth design for increased tooth contact area USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.