To vary the speed of the motor, turn the provided knob. Knob control for speed adjustment. Toggle switch for CW/CCW rotations. The item "Reversible Variable Speed 25 RPM 24v Brushless DC Dual-Shaft Gear Motor 2.6 N-m" is in sale since Saturday, August 15, 2020.This item is in the category "Business & Industrial\Industrial Automation & Motion Controls\Electric Motors\Gearmotors". The seller is "makermotor" and is located in Corona, California. This item can be shipped worldwide.