Allstar ALL87010 12-Point Zinc Plated Intake Manifold Bolt Kit Chevy Small Block/Mopar A/B, (Pack of 12) Intake bolt kit is constructed from grade 8 material, features 12-point flanges and features a clear zinc coating Bolts are 3/8 inch x 1-1/8 inch long to fit small block Chevy and Chrysler a/b engines where clearance is insufficient for standard hex head bolts Stainless washers are included Sold one set of 12 pieces Backed by a 90-day limited factory warranty