Flame-proof silicone tubing is the default setting.
Size:Outer diameter80 x Inner diameter75 x Depth55mm( 3.14 x 2.95 x 2.16inch) | Capacity:220ml | Weight:42g(1.48oz) | Material:Titanium (made in Japan),Silicone(Flame proof Sil.TUBE) | Country of origin:JAPAN