Less Expensive and Easier to Build. Variety of standard and custom exit tip designs available, required for use.

Photo Name Tetrode Drives Reference Drives Grounds Travel Pitch Drive Resolution Mass
Halo-5 Microdrive 4 1 1 6 mm250 microns16 microns (1/16 turn)2.0 grams
Halo-18 Microdrive 16 2 1 11 mm250 microns16 microns (1/16 turn)9 grams
Halo-10-Mini Microdrive 8 2 1 6 mm250 microns 16 microns (1/16 turn) 3.4 grams
Halo-10 Microdrive 8 2 1 11 mm250 microns 16 microns (1/16 turn) 6 grams