The Ai-DUAL Putters feature Odyssey's revolutionary Ai-DUAL insert. The idea for the insert was born from the company's quest to combine the attributes of its most effective inserts: the forgiveness of Ai-ONE and the roll dynamics of Microhinge. To accomplish this once thought-to-be-impossible goal, Odyssey leaned on Callaway's industry-leading artificial intelligence to design a dual-layer urethane insert comprising a soft outer layer and a firm inner layer. Like Ai-ONE, this innovative construction delivers consistent ball speeds and unmatched distance control across the face. Additionally, the insert works in conjunction with the deeper, more aggressive FRD grooves to promote the same optimal forward roll as Microhinge. The result is Odyssey's best-performing insert yet. The Jailbird Mini offers excellent MOI and stability with alignment-enhancing Versa technology in a smaller package than the standard Jailbird. The putter's double-bend hosel suits players with a straight-back, straight-through stroke. Odyssey Ai-DUAL Jailbird Mini DB Putter Features: AI-DUAL, a dual-layer urethane insert with a soft outer layer and a firm inner layer, delivers consistent ball speeds across the face and a fantastic feel Forward Roll Design Grooves are deeper and more aggressive, with a 19� slope that improves forward roll up and down the face Lightweight steel SL 90 shaft with 20-30 grams of counterbalance weight in the butt helps create a more consistent stroke Stock Grip: Odyssey Ai-DUAL Pistol Headcover Included