ARK’s Weighted Tip is a tip attachment for ARK’sZ-Vibe. Simply twista Weighted Tip into one end of the handle and either a Pen , Pencil , or Crayon Tip into the other to create the ultimate sensory writing tool. At just under 2 ounces, the added weight helps stabilize the hand, increase concentration, normalize writing speed, increase hand strength and dexterity, improve handwriting legibility, and decrease the grip force used to hold a pen/pencil. The Weighted Tip can also be used in conjunction with a Spoon Tip to provide input during self-feeds. Highly recommended for individuals with sensory integration issues and/or poor fine motor control. Made in the USA out of medical grade stainless steel Tipsold individually (other parts sold separately) Weighs just under 2 ounces Measures approximately 1 inch tall by 5/8 inch in diameter To be used with theZ-Vibe (sold separately) Not compatible with theZ-Grabber Caution: contains small parts that may pose a choking hazard; please supervise at all times. Recommended for children ages 3 and up.