These are Not from Titleist , these are Aftermarket products, No Titleist or Scotty Cameron brand name or logo on the weights. But they fit well, also come with the protective rubber rings seal (O-ring) to avoid moisture from entering weight cavity.The weights fit ALL non-mallet Studio Select models, including Newport, Button Back, My Girl, California and Kombi. Does Not fit Squareback, Fastback & Detour model.Please confirm these weights can fit your putter before place a bid. Thanks.