This Lenox 20145V224HE is a 24 TPI 10-piece hacksaw blade. It features the T2 technology, giving a unique TPI ( tooth per inch) specification to the blade. This technology also helps in minimizing heat build-up and improves the capacity of the blade to cut faster compared to standard abrasive blades. Thus, providing you quick and efficient cutting while trimming down your expenses at the same time. When talking of durability, this hacksaw blade tip is made with bimetal construction, allowing the blade to twist and bend through tough metals (black pipe, copper pipe, hardened steel, threaded rod, and rebar) without breaking. Might as well grab one of these Lenox 20145V224HE hacksaw blades and experience the convenience it can offer you!