The D2 precision-ground tool steel square bar is a high-performance alloy designed for extreme resistance to wear and abrasion. These bars are used for making high-load rollers, gears, and long-life industrial tools that must withstand heavy mechanical stress. The precision-ground surface provides a professional finish and ensures the material is ready for precision machining with no mill scale. D2 is the material of choice for industrial applications where tool life and edge retention are the most critical factors. Purchase your precision-ground D2 from Onlinemetals.com to get a premium tool steel that delivers superior results.