Bosch T318B 5-Piece 5-1/4 In. 14 TPI Basic for Metal T-Shank Jig Saw Blades 14 TPI tooth design for smooth, fast cuts High-speed steel construction for maximum life Extra-long 5-1/4 In. overall length, 4-1/4 In. working length Proper lubricant is recommended when cutting metal 5 piece pack This is Bosch's economical blade for basic cuts in metal. Application: Medium thin metals 5/64"-5/16" (ferrous and nonferrous), pipes and profile diameters 5/64" 3 1/8" Benefits: Makes straight cuts in pipes, profiles and sheet metal. TPI: 14 Overall Length: 5 1/4"