This is a 1.3mm hex driver for use on some of the screws included in our kit. The M2 sized screws we include in kits are usually a mix of 1.3mm or 1.5mm hex drive based on supply and availability.
The hex tip is German High Speed Steel with nano titanium plating. The handle is a small form factor for convenience and portability. They are machined aluminum and anodized blue with a laser etched HackFab logo on one side, and the size on the other side. Each driver is roughly 5.25" in length.