Rosetta Pencil Extender / Holder, Light Blue Marble Crafted from beautiful Italian acrylic resin Great for adding useful life to pencils once they've been sharpened down to stubs Comfortable diamond-cut knurled grip unscrews to accept a pencil Length is 4", diameter approximately 1/2" (12 mm) Works with most standard round or hexagon-shaped pencils, including regular #2 pencils, Prismacolor pencils and Caran d'Ache artist pencils