21mm SOLID 316L Stainless Steel Super Oyster Straight End Watch Bracelet Shipping Estimate : 7 - 10 Business Days within US. Material : Solid 316L Stainless Steel, Brushed Buckle : Push Button Double Flip-Lock Diver Clasp Remark : 2.5mm Dia. Fat type spring bars included Design to fit : all watches with 21mm lug width