The Acus Concentrate Vaporizer utilizes two types of quartz coils. The quartz dab coil stores concentrate in a chamber with a knurled top cap. The quartz dip cap allows you to place the tip in direct contact with concentrate. The Acus has a threaded mouthpiece for each side; the top mouthpiece is for use of the dab coil and the bottom mouthpiece is for the the dip coil. The Acus has a fixed airflow system. The DAZZVAPE Acus Concentrate Vaporizer is simple ultra portable system that will suit users on the go.