Pololu Universal Aluminum Mounting Hub for 1/4″ (6.35mm) Shaft, #4-40 Holes (2-Pack) Category_Display & LED/EL Wire 3 31:1 6V CB 31:1

3 31:1 6V CB 31:1 6V CB dual shaft 230 4

This one is right for you

blue for negative

If you are using I2C

Ensure that the total power of the load does not exceed the switching power of the relay

Pololu Universal Aluminum Mounting Hub for 1/4″ (6.35mm) Shaft, #4-40 Holes (2-Pack) Category_Display & LED/EL Wire 3 31:1 6V CB 31:1These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 1 4 inch (6. 35 mm) diameter motor shafts. The set includes two hubs, four #4 40 set screws for securing the hubs to motor shafts, and one 0. 05 Allen wrench for use with the set screws. Each hub has six threaded mounting holes for #4 40 screws (not included). 1 4 Pololu universal aluminum mounting hub on a NEMA 23 stepper motor with 1 4 diameter output shaft.