Hello, this listing is for a set of (8) New Old Stock 1937-1940 Ford V8-60 Flathead Steel Pistons as-shown. I believe these are standard bore. They were coated in a protective coating since new, hence why they look to be so dirty. I cleaned up one for the pictures. These do have the pins in them, which also have a protective coating on them. Please ask ANY questions first! Free Shipping within the USA!