servo pulley for 25KG High Torque Servo Motor, Miuzei RC Steering Servo Metal Gear Waterproof Compatible with 1/8, 1/10 RC Car, with 25T Horn 180 Degree

22mm wide 2mm thick rim top and bottom, 2mm tall 20mm string wrapping area in the middle, 5.8mm shaft in the middle, 3mm wide and long rectangular holes on both sides for a spot to tie the string, 6mm tall total.

you need to heat the shaft hole a little and press servo gear in let it cool and form around you can still pull it out and by doing this the gear can make good contact with the pulley.

I used this for my robot hand fingers for my robot hand project.

made in Tinker cad.

my YT channel Hungrybeans1 - YouTube.