Victor® Style Acetylene MapPro Propylene Nozzle with Heating Tip MFA Series, Size 8, 0.062 in Orifice no checkout Added carbon layer helps filter Added carbon layer helps filter out nuisance levels of ozone and organic vapors (less than OSHA PEL) For most welding applications HandyStrap® with buckle allows mask to comfortably hang around neck when not in use Ventex® valve lets the hot air out faster so workers stay cooler The solid black color stays cleaner looking longer preventing pre mature disposal Sleek design fits in your pocket Use for close inspection and to illuminate tight spaces IPX4 rated for water resistant operation propylene oxygen or MapPro oxygen Multi flame nozzle for preheating and straightening Fits 300 series torches For MFA 12 and MFA 15 use HD 310C torch with 3 8 hose manifold if acetylene withdrawal rate exceeds 1 7 cylinder content per hour