Rotring Rapidograph Pen .13 stainless steel point

Rotring has virtually revolutionized technical pens with Rotring Rapidograph. These technical pens are practically maintenance free and give more consistent reliable performance than other technical pens. The secret is a unique disposable cartridge. The cartridge acts as a storage area for ink and as the vent channel for the ink to be fed to the nib. Once the cartridge is finished you replace it with an entirely new venting system. This makes the Rotring Rapidograph the easiest, most reliable, refillable technical pen available today. Stainless Steel nibs.