L.A.B. Golf has introduced a new putter, the DF3i, which features a stainless steel insert that alters its feel and sound. The company offers various putter models, including zero-torque options, and some outlets are reviewing and comparing these models to help golfers choose the right one. The DF3i is part of L.A.B. Golf's lineup, which has evolved over time, but details about its specific performance and reception are not clear from the available information.