This is the recommended tool for the following parts: CSH912, CSH918, CSH912P, CSH918P, CSH912AD, CSH918AD, CSH912A286, CSH918A286, CSH912A286P, CSH918A286P
SRW56 W4-A is a drive wrench for positioning compatible inserts during installation. Compatible with CSH912, CSH918, CSH912P, CSH918P, CSH912AD, CSH918AD. This is an old Anemo part. Please use CSHW912, CSHW918