Durable cobalt bi-metal construction is engineered to last longer and cut faster compared to standard bi-metal reciprocating saw blades; 10 TPI For fast cutting through various materials including nail embedded wood, medium-thick sheet metals (2 - 10mm), metal pipes and profiles (<175mm), cables, and composite material; Flexible blade body with thin kerf allows for flush cuts; Precision ground teeth; 1/2" Universal shank