A whisk of the neck of a glass bottle includes a corking ring and a lower annular bead with forming a groove between them, in the form of a cylindrical girdle. The lower bead is formed with an outer diameter D from 58.1 mm to 65.0 mm. At the same grooves surface is formed by a cylindrical surface, which is connected with the bottom bead and the conical surface, which is connected to the corking ring. Wherein the conical surface is made with a slope within 5° ... 10°.
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