This aftermarket weight is compatible with the following Titleist Scotty Cameron putters B3 Triple Black Design - Newport 2, Newport 2 Long Neck, Santa Fe, Catalina Super Select - Newport, Newport Plus, Newport 2, Newport 2 Plus, Newport 2.5 Plus, Squareback 2, Fastback 1.5, Del Mar, Golo 6, Golo 6.5 Special Select - Delmar, Fastback 1.5, Flowback 5, Flowback 5.5, Newport, Newport 2, Newport 2.5, Squareback 2, Jetset Phantom X - Phantom X5, Phantom X5.5, Phantom X5 S, Phantom X7, Phantom X7.5, Phantom X9, Phantom X9.5, Phantom X11, Phantom X11.5, Phantom X12 Select - Newport 2, Newport 2.5, Newport 3, Newport 2 Notchback, Mallet 2, Newport 2 Notchback DB, Newport, Squareback 2, Del Mar, Flowback 5, Flowback 5.5, Newport 1.5, Newport 2 Nothcback, Newport 2.6, Newport 2DB Select Golo - Golo, Golo S, Golo 5, Golo S5 Select Mid & Long - Newport 2 Mid, Golo Mid, Golo S Mid, Big Sur long, Big Sur S long Studio Select - Newport, Newport 2, Newport 2.5, Newport 2.6, Fastback 1.5, Squareback 2, Laguna1.5, Laguna 2 Concept X - CX-01, CX-02 GoLo - GoLo 3, GoLo 5, GoLo 5R, GoLo 6, GoLo 5 DB Futura X - Futura X5, Futura X7, Futura X5R, Futura X7M, Futura X5 DB, Futura X7M DB Dual Balance - Newport Notchback 2 DB, Futura X5 DB, Golo 5 DB, Futura 6M DB, Futura X7M DB Cameron & Crown - Newport 2, Mallet 2, GoLo 5, Futura 5 XR Champions Choice - Newport Button Back CaliCompatible Withnia - Del Mar, Monterey, Monterey 1.5, Sonoma Limited Release - Monoblok 6, Phantom X9.5 Triple Black Weights include protective rubber rings seal (O rings) to avoid moisture from entering your putter weight cavity (Kindly Note: Included weights will NOT fit 2008 Studio Select Fastback 1 and Squareback 1; 2014 Select Squareback, Fastback, Roundback; Newport select M1 series; CaliCompatible Withnia Fastback and 2018 Select Fastback putters. Weight Availability: 5, 15, 20, 25, 30, 35, 40, 45g