Parker Products is a company that produces writing instruments, such as pens and fountain pens. The term PARKER PRODUCT can be broken down into two crossword solutions: PEN (3 letters) and FOUNTAINPEN (11 letters). PEN is a writing instrument that uses ink to write on paper, while FOUNTAINPEN is a type of PEN that uses a reservoir of liquid ink and a nib to write. Both of these products are produced by Parker Products.