The Helix™ Chillum is 3" long and made on 19mm tubing. Its compact Taster® head is fused to a Venturi chamber mouthpiece, featuring three air intake holes that cool and spin smoke. A colored marble prevents the chillum from rolling between uses. No accessories or water are necessary for using this hand pipe.This little pocket sized Helix is a great little piece. This action cools the smoke and makes for a much smoother hit.