Features:* 45 degree blade is used for cutting most applications; 60 degree blade can achieve the most complex and delicate cutting effect; For fabrics, thin cardboard and leather, a 30-degree blade is recommended.* The carbide tip can be sharp and durable and can be cut for a long time; The blade made of high-quality stainless steel through grinding and polishing can withstand wear and tear, allowing you to enjoy more cutting time.* These cutting blades are great for cutting plants up to 0.25mm thick. They can be used to cut thicker and denser materials such as glitter paper, adhesive film and computer printer paper, chipboard, stamping materials, thick cardboard, foam sheets, cardboard and some fabrics. Technical data:* Product name: plotter knives* Material: tungsten steel* Color: yellow, red, blue* Angle: 30 deg;, 45 deg;, 60 deg;* Size: as in the picture* Features: stickers, transfer paper , advertising grade reflective film, thin cardboard, PE, etc.* Quantity: 20 pieces Package includes: 20 pieces Plotter knives (30 deg;/ 45 deg;/ 60 deg;) Note: 1. The real color of the item may be slightly different from the pictures shown on website due to many factors such as brightness of your monitor and light brightness.2. Please allow slight differences in manual measurement for the data.