Pinit Wolf X-Ray Marking Pencil SKU WO21612R Brand: Wolf Xray $12.00 Low stock, order now! Color Red Quantity -+ Add to Cart New Details Wolf's "PRO-PEL" wax skin pencils, for marking film, glass and metal. Black or Red. 1 each per package. Details Back DetailsWolf's "PRO-PEL" wax skin pencils, for marking film, glass and metal. Black or Red. 1 each per package.