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OptiTorque Patriot Series Main Stud Kit - 12 Point Nuts - Chromoly - Black Oxide - BMW Inline-6 930226870 Reliability is just as importantProduct Description: Main Stud Kit Patriot Series 12 Point Nuts Chromoly Black Oxide BMW Inline 6 OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.