|Style||Part #||Head Diameter||Original Grinder Purchase Date|
|New Style||A-PTG-003-516||5/16" (7.9mm)||After December, 2013|
|Old Style||A-PTG-003-250||1/4" (6.3mm)||Before December, 2013|
Wheel Mandrel, Heavy-Duty. For Arc-Zone Sharpie™ Hand-Held Tungsten Grinder.
Please be aware that in December, 2013 there was a design change to the Sharpie™ Hand-Held tungsten grinders. A shaft-mounted bearing was added to the grinding head to extend the life of the motor. This upgrade required a new mandrel design as well. If you are unsure which style mandrel you need, please take a moment and measure the head of the mandrel to be replaced, or contact an Arc-Zone Customer Care specialist.