Clone Duet 3 Expansion Mini 2+ 2 TMC2209 Stepper For Duet 3 Mini 5+ 3d Printer Control Board Duet Wifi Advanced 32bit Mainrboard Clone Duet 3 Expansion Mini 2+ 2 TMC2209 Stepper For Duet 3 Mini 5+ 3d Printer Control Board Duet Wifi Advanced 32bit Mainrboard. Sale price : $10.50 Category : Computer & Office