The Storz & Bickel Easy Valve Starter Set is compatible with either the Volcano Classic or Volcano Digital Vaporizers, designed to allow multiple users to enjoy their own vapor-filled balloon bag & individual mouthpiece. The Easy Valve Starter Set includes four hassle-free balloons that come ready for action with the mouthpieces already attached. This Vaporizer kit also includes a variety of Volcano accessories to take your favorite desktop unit to a whole new level of production & functionality. Storz & Bickel Easy Valve Starter Set Works with Both Volcano Vaporizers* 4 x Easy Valve Balloons w. Mouthpieces 6 x Easy Valve Normal Screens 3 x Easy Valve Clips 1 x Cleaning Tool 1 x Easy Valve Filling Chamber 1 x Easy Valve Balloon & Adapter 1 x Easy Valve Filling Chamber Ring