FEATURES Ultra-light EVA foam body that only weighs 35 grams and a 70 gram 10" steel rod directly under the shaft. A downward gravitational pull of the steel rod tells your hands the position of the putter face. Tying the hands to the putter face promotes keeping the putter's face angle square thru the entire hitting area. This virtually eliminates face rotation at impact. GG1 is a 1" wide, deep V design that moves the gravity rod 1" below the shaft. Weight: 143 grams / 5 ounces / .32 lbs.