Magnob - 246308 - Acetylene Tank Valve Knob

Acetylene Tank Valve Knob: The MAGNOB is the magnetic knob that will always be right where you need it! The only way to lose it is to give it away! Made of anodized aircraft aluminum, this knob contains a powerful rare earth magnet which holds it securely to the valve stem. When replacing a tank, simply remove the MAGNOB from the empty tank and snap it onto the new one. MAGNOB reduces frustration and increases profits.