Yosoo 360Pcs Watch Wrist Band Spring Bars Strap Link Pins Repair Kit 8-25mm Watchmaker Eyeglass Stainless Steel Repair Tool Set Item type:Spring Bar;Material:Stainless Steel,Thickness : approx. 1.5mm,Pin Color : Silver Spring bars:Diameter:1.5mm, length:8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm, 16mm,17mm,18mm,19mm,20mm Used for Metal Watch Strap Links. Connect the watch band to the case or buckle. Easy To Install Package included:1x Case of 360 Pcs Watch Spring Bars