Southeast Tool SJM187 6 Diameter Wing 187 Review

Ordered this item, SJM187-6, got SDR187-6 instead. Came in a sealed box with the ASIN B003S7SV1W which is the ASIN of the SJM variant so not sure what happened. The SJM uses a 3/8-24 threaded hole for use with Jemco style mandrels, while the SDR has a plain 5/16 threaded hole. Since I was counting on the SJM and have received what I believe will fit a 3/8-24 threaded mandrel in preparation for it, I cannot use the actual SDR element I received as it will not fit the physically larger Jemco…