https://www.kohler.com/en/products/toilet-accessories/shop-toilet-accessories/dual-flush-trip-lever-right-hand-9236
With a nested, two-tone design, the K-9236 trip lever offers the choice of 1.1 or 1.6 gallons per flush. For use with Wellworth and Highline dual-flush toilets.
right handkohlerdualflushtrip
https://www.kohler.com/en/products/toilet-accessories/shop-toilet-accessories/dual-flush-trip-lever-left-hand-9237
The K-9237 trip lever features a unique nested design for use with dual-flush toilets.
flush rightkohlerdualhandtrip