With one end for standard and the other for wide pencils, this dual-ended pencil extender is a fantastic addition to any artist's toolkit. It's great for extending the life and usability of your pencils, making time spent sketching just a little easier.Details:Dual-ended0.34" (8.7 mm) wide end diameter0.3" (7.7 mm) standard end diameterAluminum and copper coating with nickelFor use with standard and wide pencils