BLADE MASTER Dr Blades are sold with plastic packaging. Every blade is also wrapped with a special stretch film for protection. Plastic packaging protects the blades better than regular cardboard packaging and prevents the blade from turning inside the coil or misshaping. Plastic packaging is also easier to keep in stock . The stretch film wrapped around the blade also saves the blade from rusting and oxidation and this extends the storage time of the blades compared to regular packaging.