Makermotor (PN01007-38) 3/8" D Shaft 12V DC Reversible Electric Gear Motor 50 RPM

Climax Part RC-037 Mild Steel, Black Oxide Plating Rigid Coupling, 3/8 inch bore, 3/4 inch OD, 1 inch Length, 1/4-20 x 3/16 Set Screw

RioRand Upgraded 6V-90V 15A DC Motor Pump Speed Controller

Single V Grooved Pulley, 3/8"

RioRand 12V-40V 10A PWM DC Motor Speed Controller with Knob-High Efficiency, High Torque, Low Heat Generating with Reverse Polarity Protection, High Current Protection

Climax Part RC-037-4H @ 90 Mild Steel, Black Oxide Plating Rigid Coupling, 3/8 inch bore, 3/4 inch OD, 1 inch Length, 1/4-20 x 3/16 Set Screw

Tsubaki 35B10FH Finished Bore Sprocket, Single Strand, Inch, #35 ANSI No., 3/8" Pitch, 10 Teeth, 1/2" Bore

Climax Part RC-050 Mild Steel, Black Oxide Plating Rigid Coupling, 1/2 inch bore, 1 inch OD, 1 1/2 inch Length, 1/4-20 x 1/4 Set Screw

Climax Part CC-050-037 Mild Steel, Black Oxide Plating Clamping Coupling, 1/2 inch X 3/8 inch bore, 1 1/4 inch OD, 1 7/8 inch Length, 8-32 x 1/2 Set Screw

DC Momentary Reversing Rocker Switch (double pole double throw) with wire pigtails

IndusTec Wired 20 AMP 12V DC Motor Polarity Reversing Rocker Maintained Switch