Features: brand new and high quality VERSATILITY, PRACTICALITY. Suitable for majority wooden inkless pen; metal inkless pencils; acrylic everlasting pens. WARM TIP: Please check your refill style from images to ensure this refill fits your pen before ordering! Smooth Writing. These pen refills provide smooth writing performance, no sharpening and ink requirement. Providing you with convenient writing without worrying about ink interrupting. Great for writing, drawing, sketching. Widely applied in study or work. FEATURES. The nib is made of quality and special synthetic metal material, not easy to break, long service life. The pen nib color is similiar to the wood pencils, which writes smoothly and easy to be erased. The pen nib features screw interface design, which can be easily removed and replaced. MULTIPLE KINDS OF PEN REFILL. Five different replacement pen refills: HB pen nib; 0.5mm pen nib; 0.8mm Pen Nib; 0.5mm pen refill; 0.5mm Gaoshi pen refill. Easy to use. for IDEAL REPLACEMENT OF WOOD PENCIL. Each everlasting pencil replacement for head is a perfect replacement of more than 100 pcs wood pencils. Greatly motivate childrens interest to write and study. for Ideal choice for children, boys, girls, students, teachers, friend, paint lovers, pro artists and beginners. Specifications: Weight: Approx. 5g Material: Synthetic Metal Type-0: 0.5mm Pen Refill Type-1: 0.8mm Pen Refill Type-2: 0.5mm Pen Refill Type-3: 0.5mm Pen Refill Type-4: 0.5mm Pen Refill Pen Refill Size: Approx. 11.1cm/4.37in Gaoshi Pen Refill Size: Approx. 11.7cm/4.60in 0.5mm Pen Nib Size: Approx. 16x5mm/0.62x0.19in 0.8mm Pen Nib Size: Approx. 17x5mm/0.66x0.19in Package Includes: 1 Pieces Inkless Pen Refill note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!