1. The machineground blade of the paper cutter is sharp and precise for accurate trimming. It is sharp enough to cut 10 sheets of standard 20pound A4 paper at once, effectively improving work efficiency. 2. The guillotine paper cutter features a unique alignment grid for precision and a centimeter/inch scale, significantly reducing errors to ensure accurate measurements and straight cuts. The 12inch cutting length accommodates A4, A5, B5, B6, B7, and other varying size requirements. 3. The guillotine paper cutter is made of quality steel. When idle, the blade locks into the cylindrical latch below, securing it to prevent accidental release, movement, or other hazardous situations if touched. 4. The base plate is made of metal and is sturdy. With an ergonomic handle and a sharp blade, this manual paper cutter enhances comfort and ease of cutting and trimming. The selfsharpening design extends the lifespan of the steel blade for prolonged cutting and trimming performance.