Echo PAS-225SB Split Shaft Trimmer Pro Attachment Series PASECHO'S Pro Attachment Series (PAS) lets you buy the tools you need, when you want. Echo's expandable multi task tool gives you the versatility you are looking for when stocking your trailer or tool shed. When your job requires a change, a simple tool less coupler makes changing to another tool quick and easy. Features: 21. 2 cc professional grade, 2 stroke engine for outstanding engine performance Tool less coupler allows for fast easy changes on