【Function】Professional watch maintenance tools for watch back case open requirements, opening and closing screw back case.
【High Quality】Watch Back Case Opener is made of high quality durable alloy steel, high hardness, good toughness, strength and durable.
【Grooved Chucks Size】Including Wrench and 6 Grooved chucks(30.5mm, 31.5mm, 32.5mm, 33.5mm, 34.5mm, 35.5mm, 36.5mm)
【Watch Repair Tool】Great for opening and closing waterproof watch back case. Necessary tools for watchmakers and watch repairing workers.
【Easy Storage and Carrying】Watch Back Case removal tool comes with a storage box for easy storage and portability.