(english) Steel segments that are bolted to the reel mandrel to increase their diameter so that large (24" ID) coils can be run. ภาษาไทย ภาษาอังกฤษ Adapters 0 0 ภาพประกอบ (english) Steel segments that are bolted to the reel mandrel to increase their diameter so that large (24" ID) coils can be run.