Hilti SP 15 18 Premium metal reciprocating saw blade.

Designed for cutting medium-thick metal pipes, plates, structures, and steel.
Blade dimensions are 6 inches (152mm) long and 1.4mm thick.
Features a bi-metal construction for durability and performance.
Has 18 teeth per inch (TPI) for precise, straight cuts
Hilti part number 2179715
5 blades per pack