Questions & Answers about Lesquels de ces outils gardes-tu dans le tiroir de la cuisine ?
Because lesquels replaces the noun, while quels goes directly before a noun.
Compare:
- Quels outils gardes-tu… ? = Which tools do you keep… ?
- Lesquels de ces outils gardes-tu… ? = Which of these tools do you keep… ?
So:
- quels
- noun
- lesquels = pronoun, no noun directly after it
You would not say lesquels outils.