Pulley

20 teeth
Bore: 5mm fit for NEMA17 Stepper motors
2mm pitch
Fit for 6mm wide GT2 timing belt
Material: Aluminum 

GT2 Belt

2mm pitch, 6mm width.2 meters in length.

Package include:

 2Pcs GT2 20 tooth Timing Pulleys And 2 Meters Of GT2 Belt 3D Printing CNC Reprap