The rabbit wing corkscrew has been designed to overcome problems in the operation of conventional wing corkscrews. It clamps stably on the top of a wine bottle, which makes it easy to insert spiral into cork. And the non-stick spiral penetrates cleanly, so the cork will not crumble as often happens with ordinary wing corkscrews. Clamps on top of wine bottle for ease of operation. Non-stick spiral can't break or crumble corks. Dishwasher-safe. 5-year warranty. For warranty information, please call 1-866-843-3905 or visit us online at rabbitwine.com. Made in China.