COLB-A02 was basic four-legged Colicoid-type battle droid design which was used in the production of various droid models - mostly military but civilian use cases were also known - by different droid manufacturers, including Balmorra-based Okara Droid Company

Okara Droid Company Organization Manufacturers

. Full production ID for this design was droid.colicoid_droid.basedroid_a02. Basic model was armed with two-barrel cannon installed into each of its two main manipulators and allowed to install wide array of additional weapons, systems and protective shileds.
Known models and operators

Planet	Organization	Modification
Balmorra Balmorra Planet	Sith Empire	Imperial Protector Droid Imperial Protector Droid (Sith Empire) (COLB-A02 Base Droid) Droid
		OT-9 Sentinel Droid OT-9 Sentinel Droid (COLB-A02 Base Droid) Droid
Coruscant Coruscant Planet	The Shroud's Spy Network The Shroud's Network Organization Galaxy-Wide Organizations	MX-05 Constructor Droid