This planer blade is a genuine Porter Cable part. It is supplied directly from original equipment manufacturer for use with planers. These double edged high speed steel blades keeps a sharp edge longer. Planer's knives are machined to make very precise cuts. Please note, this metal blade is sold individually. To replace the blades you w...Read moreill need a wrench. • Place planer upside down • Loosen the three nuts using the wrench • Rotate the blade guard downward • Carefully remove the blade by sliding it out of the holder • Slide the new blade sideways into the holder until it is against the end stop • Blade groove must be toward back of unit • Securely tighten the three nuts using the wrench supplied • Rotate the blade drum 180 degrees and repeat for other blade • Always replace both blades at the same time