The Kaweco Perkeo Light Spring Fountain Pens Bundle comprises two pens from the Perkeo series: Kaweco Perkeo Light Spring Fountain Pen with a Fine Nib (10001821) Kaweco Perkeo Light Spring Fountain Pen with a Medium Nib (10001822) Here are the specific details about these pens: Series: Perkeo Cap Snap-On Colors: Gray, Yellow Features Triangular Ergonomic Grip Section Ink Color: Blue Material: Plastic Nib: Steel Nib Size: Fine Pen Type: Fountain Pen These fountain pens are designed with a triangular ergonomic grip section, aimed at providing a comfortable writing experience and minimizing fatigue. The fine nib option allows for more precise and detailed writing. They are suggested as suitable choices for individuals, especially students, who are starting school and may benefit from an ergonomic and comfortable pen for writing tasks. Made in Germany