The Odyssey Ai-ONE Milled Three T is a premium midsize mallet-style putter. It features a 100% milled stainless steel head and a milled titanium insert (the “Ai-ONE” insert) designed via artificial intelligence to enhance ball-speed consistency across the face. It comes with a slant or slant-neck hosel (depending on specific “T” variant) and is aimed at players who prefer some toe-hang and a mallet profile. 

Key Features

• Ai-ONE Insert Technology: The titanium insert features AI-designed back contours to reduce ball-speed loss on off-centre strikes, increasing the effective sweet spot. 

• Fully Milled Stainless Steel Head: The head is precision milled, giving premium feel and looks. 

• SL 90 Shaft (Counter-balanced Steel): Many versions use a lightweight steel “SL 90” shaft with added counterweight in the butt end for better stability in the stroke. 

• Premium Finish: Typically features a navy-blue PVD finish combined with champagne/gold insert accents for a distinctive premium aesthetic. 

• Adjustable Weights (in Many Models): Some variants allow removable/adjustable sole weights (5g,10g,15g,20g) to fine-tune head feel and weight. 

• Moderate Toe-Hang Mallet (Three T Version): The “Three T” is designed for players with putting strokes that include some arc and face rotation — the slant neck allows for meaningful toe hang (~44° in this version).