This Unique German Ball Pen Consists of at Least 90% Cellulose Acetate, a Renewable, Bio-Based Material. the Plunger is Optionally Available in Clear Transparent Abs Plastic or Cellulose Acetate. Due to the Nature of the Material There May be Colour Variations of the Barrel & Clip. the Pen is Equipped with a Replaceable Quality Jogger Refill. Special Colour Top Available on 2.5k and above (Contact Sales For More Infomration and Prices on this version). Minimum Quantity: 25.