Kolight 360pcs/lot 8mm-25mm Watch Strap Spring Bars Link Pins Repair Tool Kit Strap bolt Wieght: 80g. Material : Stainless Steel. Color : Silver Quantity : 360 pieces. Spring bar diameter :1.5mm. Size:8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm,16mm,17mm,18mm,19mm,20mm,21mm,22mm,23mm,24mm,25mm (Each size 20pcs.) Stainless Steel Watch Pins / SPRING BARS with Double flange Pins used for Metal Watch Strap Links. Easy To Install. Comes with a box