20mm Super Engineer II Solid SS Watch Band, Straight End, PVD Black, Submariner Clasp Shipping Estimate : 7 - 10 Business Days within US. Material: 316L Stainless Steel Buckle type: 316L Stainless Steel Solid Submariner Diver Clasp with Push Button Finish: Matte PVD Black Design to fit: All watches with 20mm lug width