I have two elec-tra-mate 920 xp's for 12/0 Penn Senators.
They will also work with Senator 9/0 and 10/0 with additional brackets.
I used them on my planer rods for years and recently switched to Kristal's. They will pull up to #32 planers and dredges with up to 8 #'s of weight with no problem when coupled with a good 12/0 Senator.
Both of these work great. One was completly rebuilt by the factory and used twice since. The rebuild included new gears, new chain, new cord, new housing, new switch, re-built motor, etc. Everything but the motor housing...which you can see has flaking surface rust.
The second one is original but I have cleaned and greased the gears and chain with white lithium. It works fine.