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 J&P Cycles Browse all J&P Cycles deals $66.99 In Stock at J&P Cycles Price checked 10 days ago Buy Now at J&P Cycles Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Diamond Engineering Size OS Condition New MPN PB502S Diamond Engineering