The CCD stainless steel screens are precision-formed sieves for filtering fine particles without restricting airflow. Stainless steel provides high durability and allows repeated use for months of service. The screens are compatible with titanium and stainless steel tips. For cleaning, we advise against using alcohol or other flammable liquids. Although alcohol does not damage VapCap components even after prolonged soaking, we still recommend avoiding its use. Scope of delivery: 3x stainless steel CCD screens.