Once clients have completed all grades of the Bite Blocks, they are ready to move on to the Jaw Exercisers. Each kit contains two firm, reusable Jaw Exercisers to address jaw stability, facilitate symmetrical jaw strength, and work on jaw grading through movement to ensure standard speech sound development. These tools are appropriate for those who need additional tactile input. Made from FDA-approved materials and can be easily cleaned for multiple-client use. Instructions included.