Located in Germany's Bavarian Forest, Fluco manufactures 100% in-house at its headquarters in the town of Furth im Wald. Owner Ulrich Fleischmann represents the third generation of his family to lead the company that his grandfather founded more than 70 years ago, producing handmade watch straps of the highest quality for men and women. Fluco carefully vets every partner they collaborate with. Fluco's buckles are made entirely in Germany, at a traditional company in Baden Württemberg that tasks itself with producing premium clasps for watch straps. Fluco's popular butterfly deployant clasps are perfect for dive and sport watches and any other setups where you need a stronger, safer buckle connection than a standard pin buckle can provide. These heavy gauge polished stainless steel folding clasps are easily adjustable, and fit straps up to 3.5mm thick. Material: Heavy gauge polished stainless steel Sizing: Available in 16mm, 18mm and 20mm Fits straps up to 3.7mm thick To determine the clasp size you need, measure your band at the buckle end. (Be sure to measure at the point where the strap meets the buckle!) Includes: One free pair of strong, seamless double-flange stainless steel spring bars