Pings sigma g piper 3 black nickel putterthe new frontier of feel and forgivenessthe sigma g putter family sets new performance standards in feel stability and touch covering the entire hitting surface is an innovative insert combining highly responsive pebaxreg elastomer and a milled aluminum face to provide full face forgiveness a softer feel and consistent ball speeds will help you hole more putts than evera high energy pebax elastomer insert behind the anodized 6061 aluminum face