This is the recommended tool for the following parts: CSH420, CSH428, CSH420P, CSH428P, CSH420AD, CSH428AD, CSH420A286, CSH428A286, CSH420A286P, CSH428A286P
SRW25 W4-A is a drive wrench for positioning compatible inserts during installation. Compatible with CSH420, CSH428, CSH420P, CSH428P, CSH420AD, CSH428AD. This is an old Anemo part. Please use CSHW420, CSHW428
