Steel/stainless steel

Bi-metal blades for steel and stainless, 75 and 105 mm at a 1 to 1.2 mm pitch. The fine pitch is what makes them work: metal needs several teeth engaged at once, and a coarse blade snatches and snaps. Bi-metal pairs a hard edge with a flexible back so the blade survives the flex a jigsaw puts into it. Run slower than in wood.