This set from Scale Aircraft Conversions is designed for the new 1/48 F6F Hellcat kits from Hobby Boss. There are nine beautifully cast metal parts in the set, and the quality is an improvement over the kit parts. Not that the kit parts are bad, but these SAC parts are very nicely done. As usual, there are no instructions provided, but since the metal parts are direct replacements for the plastic parts, it should be no problem for the average modeler to figure out where everything goes. As you probably already know, cyanoacrylate (CA) glue must be used on these parts.
There are very slight mold seams on the metal parts which will require cleanup, but you would have to do that with the kit parts anyway. I test fitted the main gear leg in the hole provided in the upper wing of the kit, and the fit was snug and solid. This set contains some very small and delicate parts and care will need to be taken when handling them.