ARK proPreefer A new tool used for oral motor treatment and sensory input similar to the popular Probe. Has a round head that allows a "rolling action". Constructed of sturdy medical grade plastic – LATEX FREE! Use to stimulate gums, palate, and tongue through stroking and by applying pressure. Textured surfaces for tactile awareness and sensation. Head is 3/4" long, 3/8" round, with 4" handle. 6/pk.