1 Set of 10 Arrays fits for most detox foot spa machines with 1/4' diameter connectors (Applicable our foot spa machine model: YES0575, any inquiry is welcome) ABS arrays with 10 stainless steel coils for corrosion & heat resistance Each array delivers up to 60 uses, and you need to replace it to ensure effective detoxification Just clean the array with water or damp cloth, and dry it in the air Detox array benefits for relieving stress, improving sleep, losing weight, etc