Reproduction 340 & 440 6-Pak Holley Carburetor Vacuum Secondary Diaphragm Cover Screws. Replace those old Worn out or Missing Screws. They come with a Lock Washer and are Finished in Zinc Diachromate as Originals. Sold Individually, (6)Screws Required per Front or Rear Carbuetor. Made to the highest OEM standards for quality and fit.