Precision carbon blades manufactured of high-grade surgical steel resulting in exceptional durability and sharpness. Blades are packaged 100 per box, non-sterile and individually wrapped. It's important to ensure that the right blade is paired with the right handle. Size 60 and 70 blades (CS-B60, CS-B70) should be paired with a #8 handle (CS-H8). Size 22 blades (CS-B22) should be paired with a #4 handle (CS-H4).