This gearbox is built like a brick! The all-aluminum framework houses massive 12mm bearings to be able to take 200lbs of load with ease. The 28:1 ratio reduces the speed of your motor by 28X and leaves you with a massive amount of torque. Given it’s a worm setup, the output shaft is locked into place unless power is applied to the motor. The hub on the top gives you multiple options for mounting a plate, channel or arm to.