Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: What is the shaft diameter?
Document: This little motor is amazing. I hooked it up to a small solar panel and was unable to hold the shaft with my fingers. It has very high torque and runs cool. Gearing sounds and feels very tight. If my little invention works, I will be buying more of these. You certainly can't go wrong for the price. I love it.
nice motors, got here quickly, tested good.
Unfortunately I didn't test this part until after the 30 day return period expired. When I was ready to use it I found that the motor is defective and does not work. I confirmed with a multi meter that the correct electrical current was supplied to the motor. If you buy something from this seller then be sure to test it IMMEDIATELY when you get it. A better solution might be to go with another brand altogether.
This is a great motor, excellent for many applications!Considerable torque and works great right out of the box!Reversible, and draws about 80-90 milliamps.
The motor met my expectations for a geared motor powerful enough to run a series of scale machines through a complicated overhead belt and pulley system.
I use several of these motors to turn some low speed shafts for a gel coat finishing system. They sometimes run for days at a time. So far, no issues.Gearbox is well built, motor housing is solid. No complaints.
I thought it was a center drive, but i have a use for it
I received the motors and all preform just as advertised. i use them to power Whirley Gigs for demo purposes and am pleased with the timely shipping and design of the case mounting via 6 threaded holes.
Answer: no