Greartisan DC 12V 68RPM Worm N20 High Torque Speed Reduction Motor with Metal Gearbox Motor for DIY RC Toys

Overall this seems like a handy little gearbox. Runs smooth and quiet. Others have complained about torque but it seems ok in my particular application. The thing that bothers me personally the most is that the output shaft has the flat the full length. Now I can't seal it with an o-ring, and there's no great reason to have a full length flat. If you guys update this motor or can do a custom one please make that simple change to improve the result.That mounting complaint is valid too, but not that big a deal. You could use some long 0-80 screws if you really wanted to, or drill your own. (like I'm going to have to fabricate my own shaft now).