CORE&reg; Professional Watch Repair Tool Kit. Battery & Watch Band Replacement. 13 Pieces. Bonus Case & Hammer Includes 1 three-pin case opener, 1 case with 12 pins, 3 pin punch, 3 screwdrivers, 1 spring bar remover Meets most general watch repair requirements For general use, trusted by professionals Bonus Free Hammer Comes with black carrying case