This page introduces the spare blades of ENGINEER Inc.'s TN-04 fret saw. Eight varieties of spare blades are available, and TN-18 has the coarsest pitch (number of teeth per inch).
Blades made of the SKS alloy with full heat treatment ensure great sharpness and hardness. Featuring the non-set teeth which enable smooth and beautiful cutting.
For more details on Engineer's TN-04 fret saw, see here.