The Inart A4 100g 20-sheet Technical Tracing Paper Pad (1550399041) is composed of semi-transparent sheets that are thicker than the sketch version, designed for technical drawing and tracing that requires greater precision and resistance throughout several revisions of the same drawing. The 100g weight better withstands the corrections and scraping typical of technical drawing, without tearing with repeated use of an eraser on the same area of the paper, unlike thinner tracing paper. Good transparency is maintained even with the higher grammage, allowing for clear tracing of plans, sections, or other technical drawings to serve as a basis for a second copy. It is suitable for architectural and engineering drawings and technical projects where the final line needs to withstand several revisions before becoming definitive. The 20 sheets guarantee enough material for several technical projects over time, without having to replace the pad mid-project.