This is a Seiko watch strap, 10mm lug width, made of stainless steel. It's a 10mm lug width strap with a 12mm width at the end of the strap. Made by Seiko, the craftsmanship is excellent. There are some minor scratches from use. Ultrasonic cleaning has been performed before listing, but please refrain from purchasing if you are looking for brand new quality. Thank you. [Manufacturer] Seiko [Size] 10mm lug width. The width at the end of the strap is 12mm. [Material] Stainless steel Thank you for viewing. Please feel free to ask any questions. Thank you. #Seiko #WatchStrap #10mm #12mm Color: Silver