Device for assembly of ball heads and adapter sleeves as integrated component part of the package

A kit comprising

• a ball head for a hip prosthesis, the ball head having a cavity with an inner diameter therein;
• a package comprising a base, the package further comprising a cylindrical projection thereon;
• an adapter sleeve arranged on the cylindrical projection, receives the cavity of the ball head for a hip prosthesis, the adapter sleeve having a hollow end with an inside diameter;
• wherein the cylindrical projection has a cylinder having a diameter which corresponds to the inside diameter of the adapter sleeve;
• and where the base acts as a mechanical stop and signals that a sufficient force has been applied when the cylinder is forced to the base when the ball head is pressed onto the adapter sleeve with a sufficient force.