Measurement:<br><br> Watch Strap Spring Pin Size: 8， 9， 10， 11， 12， 13， 14， 15， 16， 17， 18， 19， 20， 21， 22， 23， 24 and 25mm<br> Diameter of Peg of Strap Spring Pin: 1. 5mm<br> Carrying Case: Approx.20x10x5cm<br><br>The Tool Set included:<br><br> 1x Case Opener<br> 18x Case Opener Pins<br> 1x Watch Case Opener Knife<br> 1x Stainless Steel Tweezers<br> 1x Spring Bar Tool<br> 2x Spring Bar Tool Spare Tips<br> 108 x Watch Strap Spring pins<br> 1x Link Remover<br> 3x Link Remover Spare Pins<br> 1x Watch Case Holder<br> 1x Watch back pry opener (with yellow ergo handle)<br> 3x Precision Anti-magnetic Screwdrivers (1.2mm， 1.4mm， 1.6mm)<br> 3x Pin Punches (0.8mm， 0.9mm， 1.0mm)<br> 1x Carrying Case<br><br>Package Included: <br> A Case of 144 Pcs Watch Tool Set<br><br>Item specifics: <br><br> This high quality watch repair tool kit great for starting professional watch repair.<br> Many of the tools are included to do the most common tasks like watchband adjustment， opening watch backs， changing watch batteries， changing watch gaskets， adjusting watch bands， and more.<br> You will be able to open a watch and remove almost any watch band with relative ease.<br> If you like to have a portable tool kit that is small， clean， and functional， this kit will be ideal to open and work on your watch anyplace that you want.<br> Adjustable Case Opener - excellent for opening waterproof cases up to 34mm<br> Spring bar remover for strap adjustment/replacement<br> Antimagnetic screwdriver for removing battery covers<br> Antimagnetic stainless steel tweezers for removing and inserting batteries<br> 6 watch strap spring-pins each of size<br> Comes with a carrying case<p></p>