This is our collection of the best Slurper marble sets and slurper caps. Many slurper sets include 3 pieces, including a large marble which is the top cap for the terp slurper, then a smaller marble which is the valve, and then a small pearl or pillar that sits in the main chamber of your terp slurper. Some terp slurper caps are simply plugs for the top of the banger, and don't allow any airflow to enter through the top. If you need a new terp slurper set then you've found the best online smoke shop for them!