Every WT Custom Roller Guide frame is precision machined out of solid aluminum bar. There are no welds, seams, bends, sharp edges or sheet metal used in our roller frames...our competition can't say that. WT Custom Roller Guides have been tested, without failure, on a variety of big game fish under the most grueling conditions. Set of 5 mini's for 30 class rods. Includes ER-4M (x2), ER-3M, ER-2M, ESR-1M.