This is a use set of R07valve springs this is a set of 16 intake springs and this is exactly how I received them from Hendrick motorsports they were used on Regan Smiths car when he raced for Tommy Baldwin racing as they ran Hendrick engines these were ran at the New Hampshire 301 where he finished 32nd Springs are in good shape would be good for your motor or just as a nice piece of racing history to add to your collection. Check out all the pictures as this is the exact set you will receive. we are offering this set with no reserve. Thanks for looking and good luck!!!! The exhaust and intake springs are different sizes