This document provides ordering and specification information for the 120 Series belt drive system. It includes details on ordering options like carriage length, travel length, drive shaft configuration, motor mounts, couplings, switches, encoders, and brakes. It also provides technical specifications for the 120 Series like load capacities, position accuracy, friction coefficient, dimensions, materials, and more. The document is intended to help customers properly order and understand the technical capabilities of the 120 Series belt drive system.