Set of 4.030 bore size Hastings Moly Rings for Small Block Chevy & Ford as well as other 4.030 diameter bore applications with 5/64 5/64 & 3/16 rings lands.  For blocks bored +.030 over size or 4.030 Bore diameter! If you need a different over size, we have these same rings with your choice of over sizes listed at  eBay item number:166487968963