rOtring Isograph Technical Pen College Set 0.25 / 0.35 / 0.5 mm

• Three high-precision Isograph pens with nib sizes of 0.25 mm, 0.35 mm, and 0.50 mm
• Wear-resistant, hard chrome-plated thin tips for exquisite detail work
• Refillable ink reservoirs suitable for frequent use
• Push-on sleeve design for easy access to ink helix and fast cleaning

• LWH: ‎5.91 x 3.94 x 1.18 inches
• Item Weight: ‎0.353 ounces

rOtring® writing or drawing instrument is guaranteed for two years from the date of original purchase against defects in materials or workmanship. If found to be defective within the warranty period, the rOtring® product will be repaired or replaced free of charge.

To learn more, please visit their direct rOtring Warranty Information page