18mm at lugs tapers to 15mm at the buckle. Perfect for all vintage Seiko, GS and KS buckles. This strap is the best choice for vintage GS and KS models. It's as close in quality and looks as the original.
It's 2.3mm thick, but over 4mm thick at the connecting ends, making it perfect for thick lugs of 45 and 61GS.
