GT2-T60 Pulley (5mm Bore / 60 TOOTH / 6mm BELT)

2GT-6 Closed Loop Timing Belt. Rubber with Fiberglass...

20Way Single Row Pin Header. Gold pins, Cuttable to shorter length (lose 1 pin every cut). 2.54mm pitch (0.1")

40mm NEMA 17 Stepper motor 1.8deg/step

GT2 6mm Timing belt. Fiber inner.  They have a special profile with rounded teeth which reduces backlash. Used for precision 3D printers and CNC...

TMC2208 Stepper Motor Driver Super Silent Step sticks Mute Driver Board 256 Microsteps