Features: brand new and high quality ESPECIALLY FOR FOUNTAIN PEN. The pen nib replacement is fit for majority fountain pens. 2 different optional: 0.38mm EF PEN NIB; 0.5mm F PEN NIB. NOTICE: Please measure your pen nib size before purchcase! Ensure the type matches rightly. PREMIUM, DURABLE. Adopts high grade for iridium material, fine workmenship, surface smoonth, sturdy interface, simple installation, not easy to loose. WRITE SMOOTHLY. Quality material, straight pen nib design, constantly ink flow, comfortable writing experience. for Ideal for writing art words, letters, signing, etc. ECOMONICAL PACK. A pack of 5 pieces straight pen nibs. Widely used in home, school and office. ESSENTIAL STATIONERY ACCESSORIE. Beatuty and practicality. A must have stationery accessories for students, teachers, wiriters. for Ideal for stationery shops, fountain pen collecters, etc. Specifications: Color: Silver Material: for Iridium Type-1: EF (0.38mm) Type-2: F (0.5mm) Quantity: 5 Pieces Pen Nib Size Approx. 6.5x16.2mm/0.25x0.63in Weight: Approx. 10g Package Includes: 1 Pack Fountain Pen Nib Replacements note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!