SP Ableware Ring Writer Clip - Offers extra control to overcome gripping difficulties, arthritis and limited dexterity. Consists of 2 linked rings. Place finger or thumb in the larger ring and the implement to be used inside the smaller ring - .24" (.61 cm) ID.Implement is automatically positioned and angled correctly for use. Little or no gripping ability is needed. Can be used with pens, pencils, crayons, paint brushes, tooth brushes, razors, etc. 3 Pack contains one of each size ring. 25 pack (comes in jar) contains 10 small, 10 medium & 5 large. Quantity: 3 pack or 25 pack Three sizes to fit different fingers. Finger Ring IDs: Small .58" (1.47 cm) Medium .73" (1.85 cm) Large .87" (2.21 cm). Material: Made of polyethylene. Manufacturer: SP Ableware Options: 3 Pack - One of Each Size (736070000) UPC: 742645012108 25 Pack Jar (736070025) UPC: 742645013587