Blue SafeScrape® Polycarbonate Razor Blades are harder and tougher for jobs that need just a little more oomph! Blades are double-edged for twice the power. Used by our customers on labels, decals, stickers, window cleaning, or general scraping where a metal blade isn’t practical. Boxes of double-edged blades are packed with 100 blades per unit. Buy More – Save More! Choose “Number of Packs” in the drop-down menu to order and view pricing options.