Lenox hand hack saw blade has 32 TPI and is made of bi-metal for prolonged durability. Bi-metal construction of the blade allows blades to bend or flex without breaking and offers shatter resistance. Blade measures 12 inch x 1/2 inch and features the Lenox tough tooth design that helps eliminate tooth strip page. Blade is compatible with Lenox hack saw frames and most other hack saw frames. Bi-metal constructionSpring steel backVirtually unbreakableShock resistantHigh heat resistance32 tpi12 in. x 1/2 in. x .025 in.