Product review (5 stars): Cheap Way to Save
After our washer had started acting up, I found a Youtube video that showed what could be the problem.  After spending less than $7 and 15 minutes of time, the washer was fixed and works like new.  Have the repairman just come out would have been $80+.  The parts looked exactly like the ones I had to replace, since the teeth were worn down.  Shows you how much the repair business actually makes on these kind of things!