22mm Stainless Steel Super Oyster for Seiko Diver 6309-7040, Submariner Clasp Shipping Estimate : 7 - 10 Business Days within US. Lug width/Buckle (mm) : 22/20 Material : 316L Stainless Steel, Solid Spring Bar : Generic 2.5mm diameter Fat spring bars included 1 pair Desigh to fit : Seiko Scuba Diver 6309-7040 / 6309-7049