Package includes: 6 pieces A4 paper cutter replacements. These replacement blades cut with a sharp edge and last a long time. Safe design: the replacement cutting blades are enclosed in a protective case and only operate when pressed. The replacement blades are easy to install and work well. They are very sharp, durable, and provide precise cuts. Durable material: these paper cutter replacement blades are made of plastic and steel, sturdy yet lightweight, solid and non-slip, easy to carry, featuring a special triangular blade design. Easy to replace blades, measurements marked in inches and centimeters. Easy to use: high-quality blades can cut through 10-12 sheets of paper (80g/m) at once. How to replace: open the plastic guide ruler near the center and the blade pops out, taking just 2 seconds. Wide usage: professional blades can cut through photos, greeting cards, pictures, and cards, ideal for making invites, gift cards, and various paper products. Great helper for office paper trimmers. You can use the cutting trimmer for making cards and find it perfect for cutting straight, neat lines. How to change the blade? 1. Place the cutting blade holder in the middle of the ruler. 2. Press both parts of the ruler apart and remove the blade holder. Size: 2.5*2.5 cm. Color: Orange. Package includes: 6 pcs paper cutter blades.