Handmade from vintage leather in Germany. We are taking a great effort to find the finest vintage leather and turn them into a masterpice for your wrist. The German made Aviators (Flieger) Straps plus our BUND Pad of your Choice, pad with the new tropic style with water - protection rubber sheet with Gore-Tex between the leather and rubber. Hand made in Germany by JürgensGermany with ss screws for use on fixed bar military watches and spring bar watches, come with our brand name stamp inside „ Jürgen's Hand Made in Germany“ These straps are created in the early 30s for the German military watches, the standard length is 200 mm, check your watch Lug measurements, you can use them from 145 to 175 mm (first – last hole), Note: We recommend using a small quantity Loc Tide 243 to secure the screws. • BUND pad sizes: • Size 1 small (35 x 72 mm) for small watches 29 to 35 mm diameter with 16 - 19 mm straps (lug wide) • Size 2 midsize (40 x 84 mm) for midsize watches 35 to 39 mm diameter with 18 - 22 mm straps (lug wide) • Size 3 BIG (47 x 91 mm) for big watches 39 to 49 mm diameter with 19 - 24 mm strap (lug wide) Note:The Loop2Loop distance is 36 at the small pad, 46 mm at the mid sized pad and about 51 mm on the big sized Bund pad. Note: I recommend using a small quantity Loc Tite 243 to secure the screws!