The Callaway Odyssey Crimson Series 660 Putter is a blade putter that borrows from the design principles of the existing Odyssey range and features a crank neck hosel coupled with a full shaft offset and the classic design of a traditional blade putter. The Odyssey Crimson Series makes the Tour standard design and quality of the Odyssey range available to all golfers. Crimson Series putters are made from 431 stainless steel with a Crimson Stronomic Insert. The insert produces a firm and resilient clubface that still provides wonderful sounds and excellent feedback. The face and insert of the Callaway Crimson Series 660 are ground together to remove any differences between the two surfaces and to provide the consistency that only a flush clubface can provide.