Specification:Brand New and BoxedJaw distance adjustable from 8mm to 57mmSize :70mm X 28mm X 11mmEasy to useSimple to Use and Fully AdjustableMaterial: steelColor: blueSuitable for Screw on Backs on Most WatchesNote:We have square head and round head,it will be senr at random.Please sure you don't mind before you order it.Package Include :1 x Watches Screw-on Back Case Opener