GTU(TM) Premium Watch Repair Kit With Box - 20pcs DIY Watch Tool Kit + 360pcs Spring Bar Condition: 100% Brand New and High Quality, what u see is what u got, If need help, contact us to get teaching video for reference. 20pcs of Accessories, Steel materials, Durable Colors All tools are protected in a gift box. 30 days return guarantee, GO TO U Resolve all your problems. Size:6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm,16mm, 17mm,18mm,19mm,20mm,21m,22mm,23mm