<!-- from fixya rte -->How do I tighten the handles - Kohler K-393-N4-BN Devonshire Centerset Lavatory Faucet K-393-N4-BN. Bathroom Faucets. Devonshire Centerset Lavatory Faucet K-393-N4-BN. Metal construction. Brass valve bodies. Quarter-turn washerless ceramic disc valves. Lever handles are ADA compliant. Fo
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