A super cool gadget for storing wine...especially on its side! The large diameter seals red and white wines air tight, allowing bottles to be stored on their side in the refrigerator without leaking. If you use the Steel Cork Wine Saver with a wine preserver, red wines will stay fresh for months. Easy to use, just place in the bottle, turn the handle, and the o-ring expands, sealing it air tight. Lifetime guarantee. Spare o-ring included.