SI Pipes Standard Carbon Filters are made in the U.S.A. by professional glass artists using high-quality glass and ground joints. Filters can be filled with Organic Cotton or Virgin Coconut Carbon. Help your body experience the benefits of a cooler, cleaner delivery method and still retain the potency and flavor of your medicine.
SI Pipes Standard Filter Adapter is handmade with high quality (Schott or Simex) glass in California. The inner dome filter has four slits on the side with a cross slit on the top. These slits are designed to allow the exact amount of (air/flow) to pass through.
They called to double check I made the purchase after seeing my billing and shipping addresses were different. If that's not a sign of a company who goes the extra mile for customer service, I'm not sure what is. Great product as well.