Bosch 2608634505 - Jig Saw Flexible Blade for Metal have bi-metal construction for long lifetime and more flexibility. Jig Saw Flexible Blade is designed for cutting sheet metal and thin metals like ferrous and non-ferrous material. Bosch blade for metal is ideal for the straight and curved cut. The tool consists of T shank design for comfortable grip and stability, which is possessed by almost all jigsaw models.