Slide in reversible planer knives 

HSS

sold in pairs

to fit  Makita M2012 NB and Makita 2012

these are not interchangeable - buy the right one 

for your machine

Tasp Brand

306mm by 8mm by 2mm double edged Slide in

OR

Starbis Brand

305mm by 32mm by 3mm Single edge Clamp type