I would like to copy right the trade name: spin a lings, spin a ling, and smack a ling. See this pic? I obtained the most amount of spin ever with these. spin a ling When these are placed at every cross in the hitting area, the spin is insane, often going over the opponent's head. When you place drinking straws, one inside another, and use them as impact absorbers, the sound is loud. The smack a ling. How to get the most spin with tennis string job, most spin with an 18 x 20, most spin spaghetti string job.