SC12 Series Heavy Duty Cutting Tip, Size 2 ORS NASCO allows mask to hang down allows mask to hang down around the user's neck when not in use Soft foam nose cushion for added comfort and no pressure points Exclusive Dura Mesh® shell resists collapsing in heat and humidity SoftSpun® lining for increased comfort and durability or dirty surfaces and heavy cutting up to 4" Compressible Graf Tite® high pressure seats withstand high temperatures and extend tip life In tip mix resists flashbacks for maximum efficiency Full swaging minimizes gas turbulence Concave tip end reduces backfire and resists flameout when base metal is accidentally contacted during cutting For hand