Milwaukee 48-42-5311 4-Inch, 10 Teeth per Inch, Bi-Metal Jig Saw Blades, 5-Pack The product is easy to use The product is durable The product is manufactured in Switzerland 10 TPI, 4 in. Length, Bi-Metal Construction 9/32 in. Width, T-Shank 5 blades per package For fast clean cutting in wood. Limited Warranty