Hi Alan,
This MK8 Extruder Aluminum feeder Kit for 1.75mm filament, for single extruder printer A10 A20 A30, SKU is 800-001-0450,
you can view the descrition of product and detailes page
to ensure it is suitable for your printer.
If you have other problems you can contact me via this mailbox:myorder@geeetech.com, thanks a lot.