This 24'' straight edge makes creating a genuinely straight edge when trimming wallpaper or cutting in easier. The straight edge makes cutting wallpaper much easier and less wasteful, guaranteeing a straight edge across the width of the average 24''-wide wallpaper strip. The rugged blue handle makes holding this straight edge easier with one hand while you cut with the other. The true edge also assists when cutting in to prevent overpainting. The edge can be easily wiped clean, making it a long-lasting and robust essential tool for professional and home DIY painting and decorating.