This is a 20mm stainless steel watch strap. The links have a unique shape, making it an unusual type. It is a used item, but there is no looseness and it can be used normally. There are minor scratches from use. We have cleaned it with ultrasonic cleaning before listing, but please refrain from purchasing if you are looking for new quality. Thank you. - Material: Stainless steel - Size: 20mm lug width - Product Name: Watch Strap Thank you for viewing. Please feel free to ask any questions. Thank you. Color: Silver系 (Silver-toned) #WatchStrap #20mm