Optitorque Technologies Llc Flat Washer - 12 mm ID. Manufacturer part number 10411. 0.875 in OD. Sold each. Note: 3.2mm Thick. Black Oxide.
OPTITORQUE TECHNOLOGIES LLC Mopar For 426 Hemi Header Stud Kit Part 10649
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Optitorque Technologies Llc for Big Block Chevy Main Stud Kit 4 Bolt Mains 10529
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OptiTorque for 12mm Flat Washer 1pk 22.2mm (7/8) OD 10411
OptiTorque for Ford 5.0L Coyote Main Stud Kit 10682
