A pack of five (5) 204337 HS 155/1.2 Bi/5 Sandwich Materials Metal Cutting Jig Saw Blades for use with Festool Trion and Carvex Jig Saws. These HCS Bi-Metal Blades have a basic rippled design and are ideal for cutting Sandwiched Metals (steel, etc.). Blades are 6" (155.00 mm) long with 21 TPI and will cut through material up to 4-11/32" (110 mm) thick. Germany