For a more reliable touch, the Odyssey Ai-ONE Seven S Putter offers the stability of a mallet head and a softer, more forgiving White Hot feel to sink shots with ease. The unique AI engineering of the Ai-ONE urethane insert combines grooved White Hot urethane with a curved aluminum backer for consistent play throughout the entire face, helping even inconsistent strokes find their way to the hole. With a lightweight steel shaft that redistributes weight toward the butt-end for more comfortable action and interchangeable weights in the front that let you alter the putter's balance to your liking, you'll never come up short again.