With four applications this Washer (10.5x24x2.3) is the most specified part.
A sample from the products for the Chain Case include: Washer (10.5x24x2.3), Cushion, Case,chain, Spacer(6.5x9x7).
The Gn250e 1999 (x) General (e01) Chain Case consists of thirteen pieces with the Case,chain being the most expensive.