This is a ready-made watch strap from Jean Rousseau. It is the Classic 3.5 model, made in France. It fits watches with a lug width of 18mm and a buckle width of 16mm. The length is 75-115. Spring bars and replacement tools are not included. This is a great deal for those who have the correct size and can replace the strap themselves. Material: Black crocodile leather (outer) Lining: Greige rubber (inner)