This is a set of 6 cassettes, each containing 180 sheets, perfect for convenient diaper disposal. One cassette has been used once. (96g, new 111g) Approximately 30 sheets from the diaper disposal bag have been used. (333g) Thank you for your understanding. Both were purchased at Akachan Honpo. - Brand: Combi - Product Name: Smart-Poi Spare Cassette - Quantity: Pack of 6 - Sheets per cassette: 180 Thank you for viewing.