Features: * Multi-function knife pen. * Metal material paper cutter, durable, beautiful appearance. * The cutting head can be replaced to extend the service life. * Multi-function, Multi blade, the cutting head can be easily disassembled, the cutting edge is sharp and durable. * The handle is easy to grip and suitable for operation. * Applicable to most paper cutting enthusiasts, beginner paper cutting, beginner manual, student paper cutting, school manual class. * Not recommended for use on rubber glass marble boards. Specification: Product Name: Carving Knife Set Material: High Carbon Steel (Blade), Plastic (Handle) Optional Color: Purple, Green, Pink, Yellow, Orange, Blue Handle Length: (Approx.) 140mm Suitable for: Cutting, Woodworking, Engraving Quantity : 13pcs (set) Package includes: 10 blade replacement 3 blade holder Note: 1. Transition: 1cm = 10mm = 0.39 inch.2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.