S = 40 pencils, M = 80 pencils, L = 120 pencils, Xl = 200 pencils. These color-changing pencils possess a magical quality: their colors automatically transform in response to temperature fluctuations-revealing deep, rich base tones in warm environments, while shifting to bright or pastel shades in cooler settings. Crafted from high-quality wood and coated with a special thermo-sensitive finish, the pencils feature long-lasting colors that remain vivid and brilliant over time. Each pencil is tipped with a latex-free eraser, allowing you to effortlessly correct any mistakes. Each set contains 40 black pencils, featuring 10 distinct metallic-sheen colors: Pink, Lemon Yellow, Bright Red, Blue, Green, White, Orange, Rose Red, Orange-Yellow, and Purple.This product is ideal for a wide range of users-including students, teachers, artists, accountants, and engineers-and also serves as an eye-catching reward or prize. Weight: 0.62 lbs.