The virtually unbreakable and shatterproof bi-metal blade is used for all kinds of metalsawing.  With a blade back of strong, flexible spring steel and a tooth line in high-alloyed super high speed steel, this blade is guaranteed to keep its sharpness for a long time.  Combines extreme cutting performance and wear resistance with a high degree of flexibility.  It is superior to all-hard high speed blades or conventional, flexible blades.