Utilizing an air cylinder and parallel link design, the 400 series arm is an alternative for reaching in, under and around obstacles. The 400 series parallel link arm is designed to maintain either end effector or tool orientation and allows the operator to effortlessly position a part or tool. The 400 series arms are typically carriage mounted and adaptable to most overhead rail systems. The unit can be easily fitted with a standard or custom end effector depending on the application.