The one you have given the link to on ebay seems fine Widget
I have been handed a few GA Spares Speedfeed heads to install - they seem to go well as well. You just wind them up to install the line, not take apart.
The only problem I have had is installing one on a mcculloch (carbon copy of your featherlite). The speedfeeds don't work with trimmers with no clutch.
The thing will run you around $55, for a straight shaft trimmer you need the BRN6923 from memory
Good thing is the replacement end caps (where you bump) only cost around $12 each, and the rest of the body is pretty indestructible
Regards
Tyler
