Narrow saw blade is a universal saw blade:
Can saw all kinds of wood as Bucksaw;

Sawing curve special-shaped saw circle, saw bend, etc., as coping saw;

You can saw all kinds of metals, such as steel, iron, stainless steel, aluminum plastic, etc., as iron saw; You can also saw frozen fish, frozen meat, bar bone, ham and other frozen foods are good helpers in the kitchen.

Wide saw blade belongs to knife saw blade:
Universal saw is equipped with a knife saw blade, which is a double row tooth saw blade with sharp blade, wear resistance, the feature of long-term use without cutting saw can break all kinds of plates, such as block board, etc.

Tungsten steel tool bit 1 (cut glass, tile, etc.)