This document contains specifications for different types of coupling models including dimensions, parameters, weight, and length. It includes data for standard flexible welded types (BF and BH), short flexible welded type (DH), long flexible welded type (CH), non-flexible welded type (WH), non-flexible flanged type (WF), and short non-flexible type (WD). It also provides specifications for a series of universal joint shafts (SWC100-SWC620) including gyration diameter, nominal angular force, fatigue angular force, axis angle, dimensions, minimum length, weight, and flex life.