Abbest(TM) Watch Adjustable Opener Back Case Press Closer Remover Repair Watchmaker Tool(Color Random) Product Features Size :70mm X 28mm X 11mm Material: steel Color: blue Has adjustable tempered pins for easy use on water resistant cases. Its compact size makes it very convenient. Tips adjust from 7/16″ to 2 1/8″ (11 mm to 54 mm).