Nike Method Putter The Nike Method Putter is revolutionary with Polymetal Groove Technology that provides faster forward roll at impact for the kind of accuracy and consistency demanded by Tour professionals. This Polymetal Groove Technology has a softer polymer groove that gives way to a milled steel secondary groove, starting the ball on a controlled forward roll at impact. Putters with milled steel face, or polymer-only inserts, can require up to 30% of the total putting distance to begin a stable forward roll. A multi-material face, made of flowed-through low-durometer polymer material, dampens impact vibrations for soft touch, while the interspersed milled steel face maintains audible feedback for proper distance control. The ported Polymetal Groove Technology allows 30 grams of internal weight to be excavated from the face and body and relocated to the perimeter for higher MOI and added stability.