The PanaVise 530 blade pack contains replacement blades for the the PanaVise 507 flat ribbon cable cutter (required for use and sold separately), allowing users with the 507 flat ribbon cable cutter and Precision PanaPress to maintain an accurately sharp ribbon cable cutting surface. Blades can cut perfect right angles on up to 64-pin conductor cable, and ribbon cable up to 3.21875" (81.8 mm) wide. Three blades are included per pack.