DIO forging clutch bell made by RRGS/JISO. 
The weight is around 332gram, inside diameter is around 106mm.
 
Product Description
*Manufacture:RRGS/JISO
*Fit Models
(1)HONDA DIO AF18 AF25 ARNADA (F5A F5B)
(2)HONDA SUPER DIO AF27 AF28 DIO ZX
(3)HONDA ELITE S / SE / SR AF16 1994-2001
*Size: Inside Diameter:106mm