Irwin Jigsaw Metal Cutting Blades are made from fully hardened high speed steel for use in metal, aluminum, and no-ferrous metal. HSS milled teeth for a longer life and fast, even cuts in metal. Straight cuts in metal, non-ferrous metal, aluminium, 3-6 mm (1/8Inch -1/4in). Length: 92mm. Pitch: 20 Precise Cut. Supplied in a pack of 5.Additional Information:• Type: Metal• Shank: U• Pack Qty.: 5• Tooth Pitch (TPI): 12• Working Length (mm): 52• Popular Reference: U118B