This document provides information on miniature harmonic drive gearheads from Harmonic Drive Gearing including three models - the CSF-1U, CSF-2XH-F, and CSF-2XH-J. It summarizes the key features and benefits of harmonic drive gearing such as zero backlash, high positional accuracy, compact size, high torque capacity, and wide range of gear ratios and input/output configurations. Technical specifications are provided for each gearhead model including dimensions, load ratings, gear ratios, and torque capabilities.