ARK's Tran-Quill® Vibrating PenThis ultimate sensory tool to work on handwriting skills! Combine the Pen Tip with the Z Vibe handle and you get the Tran Quill Pen the ideal sensory tool to work on handwriting skills. ARK's Tran Quill Pen has a smooth, gentle vibration that provides sensory input to the hand without affecting the actual writing drawing. The vibration, texture, and weight of the handle can help increase focus and concentration, improve rote muscle memory, normalize