: This indicates it is the third piece of a larger set. To open it, you must have the preceding parts.
: The alphanumeric string Tol02emnL2pEx6-v34 is likely an obscured or hashed name used to prevent automated copyright flagging or to identify a specific release version (v34) of a "Good Guide" or course. How to Use This File Tol02emnL2pEx6-v34.part3.rar
: This is a compressed format. You will need a utility like WinRAR or 7-Zip to extract it. : This indicates it is the third piece of a larger set