Description: Material: Stainless Steel; Professional 5537 watch maintenance tools is useful for watch repair works; Great for opening and closing waterproof & grooved watch back case Size of grooved chucks: NO.0--18.5mm NO.1--20.2mm NO.2--22.5mm NO.3--26.5mm NO.4--28.3mm NO.5--29.5mm; screw opener; Package Includes: 1 Piece adapter for opener #5537 6 size of grooved check (rings)
