GT2-20T Pulley (5mm Bore / 20 TOOTH / 6mm BELT)

This complete set includes the power socket with switch (Does not include wires)

The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. 

Aftermarket Nema17 Mounting bracket - Plastic

TMC2209 Stepper Motor Driver Super Silent Stepsticks Mute Driver Board 256 Microsteps

Rigid coupler for connecting rods and stepper motors

Ideal for mini CNC machines.

Blue Anodized

12mm x 600mm Cobon Steel Rod

GT2 6mm Belt Idler Pulley 20T (Smooth) available in Natural or Black anodizing. 5mm bore (Bearing)