I have some Quik-Lok attachment gearbox part numbers for you.

pole saw gearbox, 52 14-29-0016

*Useful for when you repeatedly use your pole saw to successfully cut through 15" tree trunks.* Far better to spend extra money and wait a few weeks for the replacement part to come in, rather than reach for your old-fashioned chainsaw and finish the job that day.

string trimmer gearbox, 57 14-29-0038

*Useful for when you run the tool without the guard, with too much string length, but the machine refuses to cut the power despite the large power draw.* Something's gonna break, and because you're smart, it wasn't the motor or the battery.