Halo-18 Microdrive

Provides up to 18 independently drivable shuttles to position up to 16 tetrodes with 11mm shuttle travel. Two additional shuttles available for fiber optics or reference electrodes.

Custom “half moon” drive screw head and calibrated Turn Tool provide positive, accurate 16 micron depth adjustment. Halo-18 Exit Tips interface into craniotomy and dictate electrode insertion pattern. We provide two guides to determine which Exit Tip pattern best meets your needs:

  • Halo-18 Microdrive Exit Tip Configuration Guide
  • Halo-18 Microdrive Exit Tip Design Guide

Customizable Exit Tip patterns are also available per custom design. Contact Sales@neuralynx.com for guides and details. Halo-18 microdrives seamlessly integrate with Neuralynx’s FreeLynx wireless data acquisition systems for signal recording.

Note: All Halo-18 Microdrive components and hardware also sold separately. See User Manual for suggested sources for recommended adhesives and additional tools.

  • Standard and customizable Exit Tip patterns
  • Reusable (up to 3)
  • Lightweight, solid & durable with short profile reducing head torque
  • Less expensive and easier to build
  • Optogenetic Fiber Mounted LEDs (FLEDs) may be loaded as a drive shuttle
  • Replaces NLX 18 Drive
  • All necessary components and hardware to build 1 Halo-18 Microdrive.
Sold Separately:
  • Halo-18 Assembly Kit
    Recommended for use. Includes Assembly Jig, Halo-18 Stereotaxic Mount and Halo Microdrive Turn Tool
  • Halo-18 Protective Caps
    Recommended for easy installation and removal, and safe animal storage. 2 Cap options available:

    • QuickClip® for magnetic connection
    • Omnetics
Catalog Number


Tetrode Drives   16
Reference Drives   2
Grounds   1
Travel   11 mm
Pitch   250 microns
Drive Resolution   16 microns (1/16 turn)
Mass   9 grams
Diameter   40.6 mm
Height   36 mm
Comments   Internal grounding screw pass through

Measurements include assembled EIB-72-QC electrode interface board.  *Neuralynx is not a distributor of Omnetics parts.


Provides microwire connections to two 36 channel headstages with Omnetics 44 pin connectors.

EIB-36-16TT Page

Provides microwire connections to a 72 channel QuickClip® headstage.

EIB-72-QC-Large Page

Provides microwire connections to a 72 channel QuickClip® headstage.

EIB-72-QC-Small Page
15mm or 33mm Fiber Mounted LEDs

Deliver optogenetic stimulation from directly inside a Halo microdrive.

15mm or 33mm Fiber Mounted LEDs Page
Tetrode Assembly Station

Workstation base and all necessary items (except the wire) to create custom tetrodes, as well as twisted wire electrodes of any type.

Tetrode Assembly Station Page
Polymicro Tubing Kit

Polymicro fused silica capillary tubing with standard polyimide coating, and one poly glass cleaving stone.

Polymicro Tubing Kit Page
Halo-18 Exit Tip

Interfaces the craniotomy and dictates insertion pattern for Halo-18 Microdrive.

Halo-18 Exit Tip Page
Halo-18 Assembly Kit

All necessary components and tools to aid in the construction of Halo-18 Microdrives.

Halo-18 Assembly Kit Page