The Ai-One Insert is designed using Artificial Intelligence, we've created contours on the aluminum backer of the insert to promote consistent ball speed across the face. We've co-molded a grooved White Hot urethane layer into that aluminum back for the classic White Hot feel that Tour players and amateur's love. Our designers and engineers developed a Panlite window, which is unique automotive grad e polymer, that allows us to showcase the unique topology of the back of the insert. Stroke Lab 90 shaft is a lightweight steel shaft with 20-30 grams of counterbalance weight in the butt end. This is an evolution of our Stroke Lab Weighting that will appeal to even more golfers. Unique Navy Blue PVD Finish that sets them apart and gives them a premium look. Available interchangeable front weights - 5, 10, 15 & 20 grams, these removable weights allow you to dial in your head weight to your preference (weight kit sold separately).