Vertex gaskets are made in the USA.

The first three numbers of the Winderosa Part Number Identifies the kit type:

710 PRO-FORMANCE GASKET SETS:  
These sets include the head, base, and upper end gaskets.
These sets are designed for piston replacement.
Gaskets and o-rings for power valve rebuild also included.

711 PROFESSIONAL GASKET SETS with OIL SEALS:
These sets include all gaskets, o-rings and oil seals necessary to rebuild the engine.

55 CRANKCASE OIL SEAL SETS:  
These sets contain crankshaft end seals and water pump seal.