The Evnroll Golf Gravity 1.0 Putter Grip is constructed from an ultralight foam and features a 70 gram steel rod in the fingers of the grip to virtually eliminate face rotation in the stroke. Playing with worn grips will cost you strokes, re-grip your flat stick with a new grip from Evnroll Golf.Gravity putter grips are designed to produce a square away square through stroke.Aids in reducing face rotation in the putting stroke.70 Gram steel bar in fingers uses the pull of gravity to aid the stroke.Tactile grip material is super tacky and allows for less grip pressure.Using worn grips costs you strokes. Re-grip your flat stick with a new putter grip from Evnroll.