The Delta DV Mid-Size Reservoir is not just a pen—it\'s a revolution in writing autonomy. Equipped with an innovative 2ml screw-in ink tank system, this fountain pen offers an exceptional ink capacity perfect for extended writing sessions. And with a second refillable tank included in the box, you\'ll always have 4ml of ink at your fingertips—ideal for long trips, creative marathons, or daily use without interruption. Crafted from solid-bar turned high-quality resin and inspired by the iconic Delta Dolcevita Mid-Size silhouette, this writing instrument is a celebration of Italian artistry. The cap features Delta’s signature sterling silver 925 band, adding a refined touch to its bold character. Its advanced Ink Tank system not only simplifies refilling via syringe but also functions as a reliable ink reserve. Lightweight, travel-ready, and built for performance, this pen is engineered to adapt to your every need. Finished with a smooth-writing #6 stainless steel nib, the Delta DV Mid-Size Reservoir is designed for those who value both innovation and timeless elegance. Instructions for Use – Delta "Ink Tank" Loading System Step 1: Filling the Tank Using a dropper, carefully fill the Ink Tank with your preferred bottled ink. Do not exceed the maximum capacity (2 ml) to prevent leakage. Step 2: Inserting the Tank Screw the filled Ink Tank into the included adapter, which features an airtight rubber seal for optimal leak protection. Then, attach the adapter to the writing unit by screwing it into place—it\'s fully compatible with standard Schmidt converter threads. Step 3: Replacing an Empty Tank When the tank runs out of ink, simply unscrew the empty Ink Tank while keeping the adapter in place. Take a pre-filled spare tank from your pocket and screw it onto the adapter. You\'re ready to write again immediately—no mess, no downtime. Step 4: Sealing and Storage Reuse the cap from the spare Ink Tank to seal the empty one. Store it safely in your pocket or case for future refilling and use.