Vermont American 30037 11-Piece High Speed Steel / High Carbon Steel U-shank Jig Saw Blade Set The item is Vermont American 30037 11-Piece High Speed Steel / High Carbon Steel U-shank Jig Saw Blade Set Used for Power Tool Accessories, Blades - Jig Saw The product is manufactured in Switzerland All-purpose cutting in wood, plastic and metal High speed steel and high carbon steel jig saw blades are precision filed and set for maximum metal & wood cutting performance Fit all jig saws using 1/4" universal shank