This is a USED Quick Change Center Section Side Bell. It is a Magnesium. It is a Benson RH71.
Quickchange Center Section Halibrand 201 Side Bell Alum Sprint IMCA Model A RAT2
Quickchange Center Section Halibrand 301W Aluminum Sprint IMCA Model A RAT #2
Quickchange Center Section Aluminum WINTERS Sprint UMP IMCA WISSOTA ASA K&N Rod
Quickchange Center Section NON Q.C. CAE Midget Sprint IMCA RAT Rod Vintage
Quickchange Center Section Aluminum WINTERS End Bell 6383-0 UMP IMCA WISSOTA K&N
Quickchange Center Section Front Loader Benson UMP IMCA WISSOTA ASA K&N SPRINT