Model : Deployment Buckle / Clasp Material : Stainless Steel (Top Quality 316L) Finish : Sandblasted Size : 20mm (Strap Buckle size) Thickness : Approx. 3.5mm (For Strap thickness) Overall Size : 20mm x 21mm x 8.4mm thick Remark : Design to fit 20mm Buckle End Metal, Mesh and Silicone Watch Strap in thickness approx. 3.5mm