The Kitronik Klaw gripper is a great addition to any robotics project. It is controlled by a low voltage servo which is included, this servo is used to open and close the Klaw.
At the rear of the unit are mounting points allowing it to be bolted to other items, such as buggies or robotic arms. The supply voltage is 3V to 6V. Supplied as a set of parts that require simple assembly, only a screwdriver is needed.