Odyssey White Steel 2-Ball Putter. The latest Odyssey White Steel Putter line from Callaway features Dual Insert Technology - a milled stainless steel insert in the face, surrounded by a responsive, modified White Hot insert to create a combination of precision and feel. Odyssey's proprietary White Hot face insert is lightweight and highly resilient, allowing weight to be repositioned deep in the putter head for greater resistance to twisting and increased stability on off-centre putts. The stainless steel insert is machine-milled for a consistent, flat surface that gives golfers improved roll and a unique, pleasing sound at impact. A highlighted alignment strip atop the putter head features a brushed satin finish to help golfers square the face to target and focus sight for a pure stroke.