his 3 piece terp slurper marble and pill set includes a mixture of sizes that are perfect for use with a terp slurper banger. Terp marbles assist by stirring concentrates via airflow and regulating airflow as a marble cap. Multiple colour options available. Marble set approximate sizes are 22mm, 12mm, & 6mmx16mm. Please Note that the terp slurper bangers are sold separately and are shown for illustration purposes only.