Milwaukee 48-42-0421 4-Inch, 6 Teeth per Inch, high Carbon Steel Jig Saw Blades, 5-Pack The product is easy to use The product is durable The product is manufactured in Switzerland 6 TPI, 4 in. Length, High Carbon steel Construction 9/32 in. Width, Universal Shank 5 blades per package For very fast rough cutting in wood. Limited Warranty