4" to 8" Lateral Lines
1/2" Flex shaft does not work with 12mm heads unless it is reamed out
Works awesome on 4" and 8" lines.
If you are trying to figure out a way to clean drains over 100' with out buying a flex shaft machine, then this is your best option. It gives you the rigidity to be able to manage the length with out complications, other than it is heavy as shit.
A cordless drill might be pushing the limits with this and a right angle drill with an after market clutch from us is a must.