This document provides specifications for Fersa single row tapered roller bearings in metric series. It lists the dimensions including inner diameter (d), outer diameter (D), and width (T) for various bearing models in the 302, 303, 313, 320, 322, and 323 series. Dimensions are provided in millimeters. The document appears to be an excerpt from a Fersa bearing catalog, showing metric single row tapered roller bearing options.