Bosch T127DF 5-Piece 4 In. 8 TPI Flexible for Aluminum T-Shank Jig Saw Blades Versatile blade for aluminum 3/16 In. to 5/8 In. thick, fiberglass 3/16 In. to 3/4 In. thick, and plastic 3/16 In. to 1-1/4 In. thick 8 TPI tooth design for fast, straight cuts Bimetal construction for durability and long life Proper lubricant is recommended when cutting metal 4 In. overall length, 3 In. working length Bosch's flexible blade to cut aluminum and non-ferrous metals that is break resistant and durable due to it's added flexibility. Application: Aluminum 3/16"-5/8", fiberglass 3/16", plastic 3/16"- 1 1/4". Benefits: Makes fast, straight cuts with the added the added life length afforded by its flexibility. TPI: 8 Overall Length: 4"