• Best For: Repointing crews working full wall elevations who need more joint depth per pass than the 4-inch MK Diamond blade gives, while still cutting off a hand-held grinder rather than a dedicated tuck pointer.
• Highlight: At 6 inches the MK-404DT sits between the 4-inch detail blade and the 8-inch deep-raking blade, which is why it is the size most often specified when one blade has to cover a whole repointing job.
• Expert Note: Match the blade to the guard: a 6-inch MK-404DT needs a grinder rated for 6-inch accessories, and running it on a 4-1/2 inch machine leaves the blade unguarded above the joint line.