Long-lasting Ink: Special high-quality ink ensures this double-ended marker pen won't dry out for approximately 15 days, eliminating the need for frequent cap opening and closing. The colored pen caps facilitate easy color organization and identification, making it a convenient choice for various projects. Superior Quality: Crafted with high-concentration pigments, this marker pen offers excellent quality with no smudging or odor. Each refill provides a writing length of at least 300 meters, ensuring consistent and vibrant colors every time. Perfect for mixing colors without any compromise on performance. Dual-ended Design: Featuring a thick and thin double-ended design, this marker pen offers precise marking and detailing for a wide range of applications. Ideal for interior design, landscape painting, animation creation, product design, and more, providing versatility in artistic endeavors. Ergonomic Comfort: Designed with a medium flexible nib and comfortable grip, these pens offer a smooth writing experience with no ink bleeding through the paper. The triangular body design reduces hand fatigue, ensuring prolonged usage comfort for various creative tasks. Versatile Applications: This art marker set is suitable for architectural design, advertising rendering, landscape creation, comic illustration, adult and children coloring, sketching, calligraphy practice, card making, and more. A cost-effective choice for artists, students, and hobbyists of all skill levels. Item Name: Marker Pen Material: Plastic Features: Dual-ended Design, Versatile, Ergonomic Comfort Size Details: L: 20cm/7.87", W: 16cm/6.3", H: 10cm/3.94" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 80 x Double-ended Marker Pens 1 x Cloth Bag