These colorful Pen & Pencil Weights assist sensory motor planning. It provides feedback for those with difficulty in vestibular or proprioceptive processing. O-Rings secure the weights and allow positioning anywhere on the writing instrument. Weights are approximately 1.5 ounces. The kit includes 3 pencil weights and 6 O-rings. These are useful for individuals with Autism or other special needs who may need help with fine motor and handwriting skills.