| abstract |
A golf ball having a two-layer core consisting of an inner layer core and an outer layer core and a cover of one or more layers, wherein the inner layer core and the outer layer core are each formed of a rubber composition mainly composed of a base rubber. The core cross-sectional hardness ratio at 0% (JIS-C hardness value) when the diameter of the inner core is 30 mm or less, the center point of the cross-section of the two-layer core is 0%, and the surface of the two-layer core is 100%. A golf ball having a core cross-sectional hardness ratio (JIS-C hardness value / Shore D hardness value) at 100% of 1.70 or less and a / Shore D hardness value of 1.70 or more. [Effect] According to the golf ball of the present invention, spin reduction can be achieved in full shot with a driver (W # 1) and a long iron, excellent flight performance can be provided, and control in a short game during approach shot It has high quality, and is particularly suitable as a golf ball for professionals and middle and advanced golfers. [Selected figure] Figure 1 |