• Super-High MOI in a Heel Toe-weighted Mallet• Club head construction of 11 parts made of 8 different materials, 304 stainless steel, 17-4 stainless steel, aluminum, 3M Foam, tungsten, polycarbonate, Surlyn and TPU, where the Spider Mallet super high MOI comes from. • The club head is counterbalanced with a 130-gram grip that’s twice as heavy as a typical putter grip, making it more stable than a traditional putter. • PureRoll Surlyn insert promotes soft yet solid feel and smooth roll straight off the face.• Single Bend shaft.