Green Double Lever Watch Back Case Opener Remover removal Knife Repair Tool Kit Size: about 143 mm X 20 mm X 5 mm/5.63X0.79X0.20inch Can be used for more delicate and high grade watch cases With a hard plastic handle for easy gripping and a tempered steel blade to opening With 2 different levers that allow you to open most pressure case backs and snap off case backs This case knife is perfect for your battery changing kit or for use in other applications