Sumnacon Professional Watchmakers' Tools Case - Watch Repair Tool Kit with Free 270 Pcs Watch Strap Spring Pins(8-25mm) + Watch Holder( for 10-45mm Diameter Watch) High quality watch repair tools kit Antimagnetic screwdriver for removing battery covers Adjustable Case Opener - excellent for opening waterproof cases up to 34mm Suit for both professional and general use, solutions for most watch repair requirements Come with a nylon carrying case is included for the sake of convenient storage.