12-Inch Bi-Metal Blades, 24 TPI, 10-Pack Klein Tools 1224BI-P Fits all 12-Inch (305 mm) hacksaw blades Re-closable, heavy-vinyl, seal-tight pouch Box of 10 blades Weight: 8 ounces/pack Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.