![FiberGlass PrepPen, 12-437](http://ace4parts.com/cdn/shop/products/12-437_{width}x.png?v=1601323431)
comes with (2) cartridges, one installed, other in handle for storage, goes where other tools and sand paper can't reach, use it like a pencil eraser, but it reacts like a sand blaster, ,
comes with (2) cartridges, one installed, other in handle for storage, goes where other tools and sand paper can't reach, use it like a pencil eraser, but it reacts like a sand blaster, ,