GTU(TM) Watch Back Case Opener Screw Remover Wrench Tool Kit Set With 18 chucks + Storage Case + Gift Condition: 100% Brand New and High Quality, for watch case diameter 38cm Common Use Generic Watch Repair Tools Great For Changing Batteries & Bands On Most Watches GO TO U store, Honest Seller, Responsible For our product, provide perfect after-sales service. Any question, please contact me, it's my pleasure to serve you. Package Included: 1 wrench + 18 chucks + 1 watch link remover