Weight Kit For Pen & Pencils Cast Boots box footprint is only 12 Jobst Opaque Sensitive box footprint is only 12 x 12 x 37 * Limited 12 Month Warranty * Approximate size: 80 x 36 x 6 * Latex Free * Weight capacity 275 lbs Includes four units with fixed incline: 1 each at 30 degree 25 degree 20 degree and 15 degree * Non skid threads * Natural finish * 16 Deep x 15 Wide each * Colorful weights assist sensory motor planning * They provide feedback for those with difficulty in vestibular or proprioceptive processing * The O Rings secure the weights and allow them to be placed anywhere on the writing instrument * Weights are approx each * Kit includes six pencil weights 3 pencil grips and one dozen #2 pencils