From the blog "Donnerwetter's Mod Archives"

Note: This normal map has also been integrated into the schlong texture options for my vaginaless 3BA and BHUNP mods     Golf balls, be gone   I don't like how rough the balls look on the default TRX Futa Addon textures, so I smoothed the normal map out to give them a more feminine appearance ?     DOWNLOAD   Smoother Balls for TRX Futa Addon 2.01.7z