Feel matters. That's why L.A.B. Golf created DF3i. If you like a firmer feel and faster face, the stainless steel insert in the award-winning DF3i is for you. It products 2% faster ball speed than DF3. If you prefer a softer, buttery kind of feed, then you're probably more of a DF3 player. Either way, they both share the same look, head shape, and forgiveness that made DF3 L.A.B. Golf's most successful putter Lie Angle Balance Technology Regardless of the model or build, L.A.B. Golf putters will ALWAYS be Lie Angle Balanced 6061 Aluminum Head All L.A.B. Golf putter heads are 100% CNC milled from 6061 aircraft aluminum. This not only allows L.A.B. Golf to develop unique, industry leading designs, but it also creates the most customizable product in all of golf. 303 Stainless Steel Insert Drawing from the OZ.1i and OZ.1i HS, the 303 stainless steel insert adds a firmer, more responsive feel to the DF3i - perfect for golfers who love the head shape but want extra feedback at impact.