Seat rail guide set for both seats.
The set includes 2 x 171 881 213B outer white plastic guide
2 x 191 881 213 inner seat rail guides
2 x 435 881 203A front seat guides

Beetle (1971-1979), Golf Mk1 (1975-1983), Golf Mk2 (1984-1992)

you may also need 321 881 203 /909 on some applications