316L Surgical grade stainless steel watch clasp and spring bar with brushed PVD finish that will not chip weather or rust. Available in Stainless Steel, Black, Gunmetal Grey, Gold and Rose Gold. Compatible with any watch band that uses a 16mm, 18mm, 20mm, 22mm or 24mm buckle. Measure width from side to side where the buckle attaches to the band. Be aware that many watch bands have a taper and are more narrow at the end where the buckle attaches than at the end where the watch attaches. For example, the buckle for a 22mm BARTON elite silicone strap is actually 20mm in width, the buckle for a 20mm BARTON elite silicone strap is 18mm in width and the buckle for an 18mm BARTON elite silicone strap is 16mm in width.Buckle tang is 2.9mm wide. Spring bar is 1.8mm in diameter. Recommended for those looking to match their buckle to the color of their watch casing or just to add style. Full money back satisfaction guarantee.