147Pcs Watch Repair Tool Kit Watchmaker Back Case Opener Link Spring Bar RemoverProduct DescriptionPerfect sel for very common tasks like opening watch backs, watchband adjustment, changing watch batteries, gaskets, adjusting bands, and moreFeaturesAdjustable Case Opener excellent for opening waterproof cases up to 34mm Spring bar remover for strap adjustmentreplacement Antimagnetic screwdriver for removing battery covers Antimagnetic stainless steel tweezers for removing and inserting batteries 6 watch strap spring-pins each of size Diameter of Peg of Strap Spring Pin: 1 5mm Watch Strap Spring Pin Size: 8910, 11, 12, 13, 14, 15, 16, 17 18 19, 20, 21,22 23, 24 and 25mmPackage includes1x Adjustable Case Opener18 x Adjustable Case1x Watch Case Opener Knire1 x Stanless Steel Iwezer1x Sping Bar lool2x Spnng Bar Tool Spare Tips108 x Watch Strap Spriog gins 1xHamme1x Link Remover5x link Remover Spare Pins1 x Watch Case Holder (for watch case 10-45mm diameter)1x Watch back pry opener (with yellow ergo handle)3 x Precison Ant-magnetic Screwadives (1.2mm, 1.4mm, 1.6mm)3x Pin Punches (0.8mm 0 8mm, 0.9mm)1x Carying Case