Safe Scrape™ Blue 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, and general scraping where a metal blade isn’t practical. Boxes of double edged blades packed 100 blades in a box. Buy More – Save More! Click on “Number of Packs” Drop Down Menu to order and view pricing.