Abstract: Provided is a resin material showing a high thermal conductivity and having high heat resistance while having a low dielectric constant and a low dielectric loss tangent. The material is a polyfunctional vinyl resin, which is represented by the following general formula (1): where R1s each independently represent a hydrocarbon group having 1 to 8 carbon atoms, R2s each independently represent a hydrogen atom or a dicyclopentenyl group, and at least one thereof represents a dicyclopentenyl group, Xs each independently represent a hydrogen atom or a vinyl group-containing aromatic group represented by the formula (1a), and at least one thereof represents a vinyl group-containing aromatic group, “n” represents a number of repetitions, and the average thereof is a number of from 1 to 5, and Ar represents an aromatic ring.

Abstract: Disclosed are a grip and a golf club equipped with the same. The grip includes a first protrusion formed at one side of an inner peripheral surface of the grip while extending lengthwise along the grip by a predetermined distance and protruding inward from the grip, the first protrusion being biased outward as a shaft has been inserted into the grip so that an outer peripheral surface of the grip protrudes outward; and a second protrusion formed at an upper portion of the first protrusion while extending lengthwise along the grip by a predetermined distance, the second protrusion being protruded more that the first protrusion and having a width larger than that of the first protrusion, the second protrusion being biased outward as the shaft has been inserted into the grip so that the outer peripheral surface of the grip protrudes outward.

Abstract: Disclosed are a grip and a golf club equipped with the same. The grip includes a first protrusion formed at one side of an inner peripheral surface of the grip while extending lengthwise along the grip by a predetermined distance and protruding inward from the grip, the first protrusion being biased outward as a shaft has been inserted into the grip so that an outer peripheral surface of the grip protrudes outward; and a second protrusion formed at an upper portion of the first protrusion while extending lengthwise along the grip by a predetermined distance, the second protrusion being protruded more that the first protrusion and having a width larger than that of the first protrusion, the second protrusion being biased outward as the shaft has been inserted into the grip so that the outer peripheral surface of the grip protrudes outward.