Sketching Pen Set: Features (6) pointed pen nibs (#56, #99, #102, #107, #108, #512), (1) Standard Penholder and (1) Crowquill Holder #56 Standard School: Possessing a stiff action, this nib is steady and durable, making it a perfect tool for beginners. #99 Drawing: This extremely flexible nib features an extra fine point and is capable of producing thick swells with minimal pressure. Perfect for artists with a light touch working on smooth papers. #102 Crowquill: The #102 is super fine and flexible. #107 Hawk Quill: Stiffer than the #102, the #107 features a super fine point and is highly durable. Best for creating long, even lines and cross-hatching details. #108 Litho Hawk Quill: The #108 is best for use for cross-hatching, flourishing and lithography. #512 Bowl-Pointed: Fine pen is best for ruling and lettering applications.