he Matco sep76v is a 1" Drive 7 Piece SAE 6 Point ADV Wheel Service Socket Set, according to Matco's official website. The "SEP76V" is the part number for this specific set. 

Product details

• Set contents: This is a 7-piece set that includes SAE 6-point sockets.

• Drive size: The sockets have a 1-inch drive, designed for use with heavy-duty impact wrenches.

• Socket type: All sockets are 6-point, which is standard for impact sockets and provides a strong grip on fasteners.

• Application: The "ADV Wheel Service" designation means this set is designed for heavy-duty automotive applications, such as removing lug nuts on large trucks or commercial vehicles.

• System of measurement: The "SAE" in the product name indicates the sockets are measured in inches and are suitable for most American-made vehicles and machinery.