5 Pack, 5-1/4" , 24 TPI, T-Shank, Jig Saw Blade, For Pipes, Profiles, & Sheet Metal 10-16 Gauge, Thin Metals 1/16" To 1/8" Thick, Ferrous & Non-Ferrous, Pipes Less Than 2-1/2" Diameter, Tube Stock, Angle Iron, For Smooth, Straight Cuts, High Speed Steel Construction For Maximum Life, Proper Lubricant Is Recommended When Cutting Metal.