SEIKO OEM Spring Bar 21mm 10 Pcs Non-Magnetic Stainless Steel 21mm x 1.8mm x 0.8mm Double Fringe SEIKO Diver's Series Stainless Steel Spring Bar (Double Fringe Style) 1.8mm Gauge/Diameter - 21mm x1.8mm x 0.8mm Fits 21mm lugs (0.8 mm pin diameter) OEM Swiss 316L Non-Magnetic Stainless Steel You Get 10 pieces SEIKO OEM Diver's Series Spring Bar