- The strongest IPF approved bar in the world! - Heat Strengthened Steel Alloy – bar strength is substantially increased over standard steel mill specs through an additional heat treating process. - 220,000 psi - one of the highest strength ratings of any bar - HRC 48 Rockwell Hardness - provides an optimum balance between stiffness and flex.  - 29 mm bar shaft – maximum IPF diameter for maximum strength and reduced bar whip. - Black Oxidized Shaft – inhibits rust with a super durable finish that does not impact knurling. The finish is approximately 1 micrometer thick (one thousandth of a millimeter). - Hardened Satin Chrome Sleeves – helps prevent rust, allows for easier sliding of plates onto the sleeve and provides an attractive contrast to the shaft, - Hi-Performance Bushings - Self-lubricating oil impregnated bronze bushings ensure optimal rotation, maximum durability, and maximum weight disbursement over the length of the bushing and sleeve