【Widely Application】Perfect for both smooth and porous surfaces! Ideal for rock painting, glass etching, custom mug designs, scrapbooking, calligraphy, nail art, Halloween pumpkins, and DIY crafts. 【Precision Dual Tip Design】Each marker features a versatile dual-tip system: a fine tip (1-3mm) for sharp lines, intricate details, and lettering, plus a dot tip (3-5mm) for bold dots, filling areas, and creating textures.