For TOTO, comfort does not simply mean comfort of movement. Ease of use, when it lasts a long time, becomes comfort in itself. For this purpose, TOTO has developed the internal valve based on the user's touch. Designed from the ground up to provide a fundamental comfort in operation with a special coating for prolonged comfort. The ceramic disc, a core valve component, is covered with a special DLC (Diamond Like Carbon) coating. This ensures long-lasting quality over conventional faucets that use a greased valve.