Save money and time for watch maintenance The watch case opening kit is ideal for repairing your watch in minutes, replacing the battery and making jewelry. No need for a jeweler to replace the watch battery. You save a lot of money and time. Adjustable Watch Case Holder This watch case holder has 4 adjustable plastic pins that hold the watch firmly in place. The plastic pins can be set in different positions for different sizes of watch case without scratching / dropping the watch. Durable Watch Back Remover The watch case opener is made of alloy. Aluminum water resistant and not easy to rust or damage. The adjustable distance of the pin is 15 mm 57 mm. Easily remove and reattach the back cover of the watch. 2 types of watch case knives Stainless steel and strong plastic watch case knives. 2 types of watch case knives. Just put the blade back under the case and curdle the watch.