Technical corner


1/  3Drive datasheet

2/  Comparative table for some available microdrives

3/  3Drive holders datasheet

4/  Starter kit



One microdrive to rule them all.

The 3Drive is lightweight, with a small footprint that makes it perfect for freely behaving and head-fixed animals. It is easy to use, and was designed to minimize the risk of silicon probe damage. It’s literally armor for your probes. In our hands, probes are recovered intact every time.

Assembly: the chronic probe’s flex cable simply ‘clicks’ into the drive’s shuttle. A drop of glue is then added for safety and the bottom half of the drive is covered by a protective cap.
This creates a secure space to retract the probe shanks.


Base: 5 × 6 mm, height: 16.7 mm


9 mm


62.5 µm per 1/4 turn


0.43 g (0.38 g main body and 0.05 g protective cap)

How do we compare?

Choosing the right microdrive depends very much on your application, as each design comes with different trade-offs. The 3Drive’s main advantages are the ability to recover your probes intact, compatibility with most chronic probe models, and our competitive pricing. Below we made a comparative table with the 2 main microdrives commercially available.

(1) Data accurate as of May 8, 2018, to our knowledge. Please let us know if you are aware of any changes.

(2) Green denotes – when relevant – which drive performs best for a given parameter.

(3) Screw precision: Neuronexus has 3 drive sizes, thus the range for screw precision, travel distance, footprint and weight.

(4) Multiple drives/animal: Here we consider the rat model. For mice, it is possible – but extremely difficult – to fit 2 nano-Drives or 3Drives, assuming your target areas have a spatial configuration that leaves enough working surface for the microdrives.

(5) *Footprint: In principle, the nano-Drive and smallest dDrive without protective cap are more versatile for different experiments, as they have a smaller footprint. In practice, to achieve that footprint, they have to sacrifice probe protection and recovery, while making the surgery much more complex and unpredictable.

3Drive holders


To handle your probes with maximum safety.

Probe breakage can happen at any time while you handle them. Indeed, to minimize tissue damage, probe shanks are manufactured as thin as possible, making them fairly fragile. Once your probe is mounted onto the 3Drive, it is safe. Before that, to minimize the risk of breakage, proper tools and procedures are needed. That is why we have developed our holders.


This holder was designed to securely mount your probe on the 3Drive.


See rendering.This holder is used during the implant surgery. It attaches to your stereotaxic arm, and includes 2 hooks that serve as support for the connector.

Starter kit

All you need to get going.

in a box.

Two 3Drives

Armor for your probes, twice ? 

Two holders

One assembly holder, and one implantation holder.

Surgery protocol

Including how to mount and recover your probes. While developed for single 3drive in mouse, can be adapted to various preparations.


We support you in developing your own implant surgery protocol.