Up for auction is a good used set of SBC 1.6 x 7/16 stud roller rocker arms. I kept these from a customers race engine build as I use shaft rockers. There was one missing so I replace with another summit rocker. I was told Harland Sharp made Summit roller rockers at one time, now they are made by Scorpion. So, one of the 16 rockers are a scorpion and the rest are Harland sharps. There are new ploy locks with these rockers. No Reserve. Ships USPS Priority.