Premium Material: The utility knife blades are forged from SK2 High Carbon Steel, offering superior hardness and enhanced wear resistance compared to standard blades
Standard Size: 9 mm width, 0.38 mm thickness and 80 mm length, fit all standard snap-off utility knives and box cutters; 9 segments feature a deep V-notch, allows the blade to snap off at breaking point
Ultra Sharp: 30 Degree design, combined with high-technique heat treatment and triple grinding processes, delivers superior cutting performance; the S303 box cutter blades with an upgraded Black Coating for smoother cutting
Portable Packaging: 100 PCS box cutter blade refills, 10 blades/box, total 10 boxes, lightweight and portable for easy carrying; the blade box can be hung on the workbench, saving space and making it easy to access
Wide Application: The SINSEUNG S301/S303 box cutter blade refills are specifically designed for Window Tinting, Vinyl Wrap, PPF, Foam Carving and precision detailing work; also suitable for cutting cardboard, fabric, leather and wallpaper
