The Adult Weighted Universal Deluxe Holder can be used with pens, pencils markers, paintbrushes, crayons and any item that measures 1⁄8 to 7⁄16 inch diameter. Provides added weight for those having difficulty in bearing down with a writing device or have shaky hands. Three adjustable set screws holds items securely. Adult Weighted Universal Deluxe Holder Features:Can be used with any item that is 1⁄8 to 7⁄16 inch diameter.Comes with an allen wrench and 3 extra long screws for smaller objects.Assists in stabilizing the hand.Deluxe model has vinyl handle.Adult Weighted Universal Deluxe Holder Specifications:Measures: 5 inches long.Diameter: 1 1⁄8 inches.Weighs: 7 oz.