Product Description Polished to a mirror finish Custom 450 Stainless Steel 12-Point bolts have 180,000 psi tensile, which is 20% stronger than Grade 8 UNJ3A rolled threads; Note: Two required for dual disc Diamond Engineering 12-Point Front Caliper Mount Kit at RevZilla Browse all RevZilla deals $29.99 In Stock at RevZilla Price checked 10 days ago Buy Now at RevZilla Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Diamond Engineering Size OS Condition New MPN PB506S Diamond Engineering