National 7050 Premium High Tempered...
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These ultra-high quality spring steel blades are extra hard; ensuring long blade life between sharpening. They work on all glued down carpets, VCT, VAT, rubber tile, cork, re-scraping adhesive and elastomeric coatings. Great for floor accumulations.
Suit National machineries 505-W, 550-W, 5280-W, 6280-W, 6280-HD, and ride-on machines.