Klein Bi-Metal Hacksaw Blades are 12-Inches long with 24 teeth per inch. The special high-speed steel teeth fused to regular carbon-steel body provide superior cutting and longer life. The blades withstand greater saw tension for less blade flexing . Klein Bi-Metal Hacksaw Blades are 12-Inches long with 24 teeth per inch. The special high-speed steel teeth fused to regular carbon-steel body provide superior cutting and longer life. The blades withstand greater saw tension for less blade flexing . Re-closable, heavy-vinyl, seal-tight pouch Box of 10 blades Weight: 8 ounces/pack Klein Bi-Metal Hacksaw Blades are 12-Inches long with 24 teeth per inch. The special high-speed steel teeth fused to regular carbon-steel body provide superior cutting and longer life. The blades withstand greater saw tension for less blade flexing .