A pad for supporting an abrasive disc by being fixed with the abrasive disc to a shaft of a grinder, the pad including a supporting surface opposing the abrasive disc. In a radial direction, an outer edge of the supporting surface is located inward of an outer edge of the abrasive disc. The supporting surface includes a taper portion inclined away from the abrasive disc as it approaches the outer edge of the supporting surface. The abrasive disc is not fixed to the taper portion.