Feature: 1. Applicable Size: Watch suction back case opener fits for back cover with diameter of 16mm, 20mm, 23mm, 26mm, 30mm, 34mm, 40mm, 45mm, 66mm. 2. Ergonomic Design: Die watch back case opener adopts ergonomic design, simple operation, high work efficiency, time saving and labor saving. 3. Nonmarking Silicone: Watch back cover opener set is made of flexible silicone and aluminum alloy, non marking, wear resistant and durable, long use time. 4. Easy and Quick Operation: The die watch back case remover with a rotation handle for easy and labor saving, you can open the watch back case quickly. 5. Practical Repairing Tool: Watch case removal tool is suitable for most rotation open watches, it is an ideal practical tool for watchmaking and watch repairs. Specification: Item Type: Watch Suction Back Case Opener Material: Aluminum Alloy + Silicone Applicable Back Cover Diameter (mm): 16, 20, 23, 26, 30, 34, 40, 45, 66 Package List: 1 x Storage Plate 9 x Suction Dies1 x Handle Note: 1. This product is suitable for a rotating watch back cover. The back cover of the watch is opened by the friction of soft silicone, which will not damage the watch back cover or leave traces. 2. Since the back cover of the watch is opened by friction, the back cover may not be able to be opened due to rust or excessive dirt. 3. When using, put the watch mirror side down into the silicone base (non‑slip), and then open it with the handle. Do not use the handle to open the back cover of the watch to avoid damage to the watch.