The Pololu Micro Metal gearmotor bracket (the motors are metal, the bracket is plastic!) is a really nice way to make a tidy installation of our GM11a-14a style gear motors. It also seals the gearbox against contamination, and locks the gearhead in place with grooves, for a nice, clean, secure fit!
This version has the extended base, which lets you push the gearhead further out for deeper reach, which is useful with the 42x19mm type wheels.
Includes two #2-56×7/16" screws and two nuts per bracket.