Discraft Putter Line Hard Zone OS - 174.0g - Solid BlueSee All: Putter Line Hard Zone OSs with Stock stamp. Mold: The Discraft Zone OS Putter Speed: 4 Glide: 2 Turn: 1 Fade: 5 See all Zone OSs Boasting impressive torque resistance and an assertive fade, the Zone OS has earned its stripes as a PDGA certified beefcake. Whether you need a disc for forehand throws, spike hyzers, or approach shots, this disc can handle it all even the toughest of winds and terrain. Plastic: Putter Line Hard See all Putter Line