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The Ai-ONE Rossie S is a classic Odyssey rounded mallet designed to enhance your putting precision. Its bold alignment lines and short slant hosel offer excellent toe hang, ideal for strokes with more face rotation and arc. Featuring the Ai-ONE insert with an aluminum backer and White Hot urethane striking surface, it delivers a soft, consistent feel. The new SL 90 Stroke Lab steel shaft adds stability, helping you maintain control throughout your stroke. This putter supports a confident, smooth putting experience on the green.