Solid carbide planer blades from Trend are manufactured from high grade carbide & come supplied in pairs.
The two cutting edges are precision ground & reversible for an extended life.
You should never use dull blades.
Always unplug machine when fitting blades or undertaking maintenance.
Refer to manufacturer's instruction when making any adjustments.
Planer blades must always be securely clamped so that they cannot work loose during service.