With milled steel inside the urethane insert to create Dual Insert Technology. The new White Steel gives you the precision and accuracy of milled steel and the feel and distance control of urethane. What makes this line of Odyssey Putters so deadly on the green is its overwhelming forgiveness and softness. You'll feel it the instant you wrap your hands around one. You'll see it the instant you putt. Dual Insert Technology with milled stainless steel inside a White Hot urethane insert. Lightweight insert positions putter weight deep in the putter head for greater resistance to twisting and increased stability while giving you incredibly soft feel Stainless steel face insert is machine milled for a consistent, flat surface with improved roll and pleasing sound Two-line alignment system squares the putter face to help focus sight New anatomic grip design for a secure, soft feel that gives you control without over gripping.