Vintage Yellow ROBO JR  Knife Blade Sharpener Handheld 1.75" x 1.75" inches  Pat 2469,797. Used vintage sharpener with scratches and scuffs to plastic. There is no grip material just yellow plastic with plastic showing wear chips or wear down of plastic edge,  scratches and scuffs to the plastic.  Refer to pictures for style design, measurements and conditions.