Grader blades, slicing edges. close bit producer from China, higher carbon steel & heat handle cutting edge You will need the adobe Acrobat reader to look at the document since the manual is pdf format. If the Laptop or computer dont have this software you can obtain and set http://tractorpartsmanuals51470.link4blogs.com/33588908/top-guidelines-of-yanmar-3tne84-sa-parts-catalog