Odyssey White Ice 2Ball F7 Putter White Ice Insert The multi-layer insert has been fine-tuned to enhance sound, responsiveness, resiliency and consistency. The inner core is 19.6% firmer to enhance the feel and 92% stiffer for better resiliency. Adjustable Weighting Specific to 2-Ball models, Adjustable Weighting allows optimization with three weighting options to dial in the feel based on personal preference Dark Nickel Finish Creates a rich premium for the utmost in confidence.