Our 4” 18 TPI reciprocating saw blades slice through thin metals,no rough burrs. Perfect for detail work wher accuracy matters, fitting all standard 1/2" shank air reciprocating saws. Made with high-speed steel and bi-metal tech, these sawzall blades Handles repeated use on light to medium materials without breaking—ideal for DIY and pro projects alike. Our sawzall blades metal deliver consistent, chatter-free cuts. The fine 18 TPI tooth pattern prevents material snagging, making every cut quick and easy. With a standard 1/2" shank, fits all Sawzall tools on the market including Dewalt, Milwauke Sawzall Saw, SKIL, Makita, Black & Decker, Ryobi, Porter Cable, Hitachi, Flex, Hilti and more . If you have any questions about this product, please contact us, including pre-sale and after-sales questions, and we will reply to your message as soon as possible.