Starrett KBS1224-2 Bi-Metal Unique High Speed Steel Safe-Flex Hacksaw Frame Blade, 0.025" Thick, 24 TPI, 12" Length x 1/2" Width (Pack of 2) Bi-Metal Unique Safe-Flex hacksaw frame blade Made with a patented solid-state diffusion process with 170 percent more high speed steel weld area and ground teeth For reduced blade fracture, faster cutting and longer life 24 Teeth per inch Measures 12-inches length by 1/2-inches width