ARK's Brush Tip Combo Pack includes two different brushes. The softer Brush Tip has pliable bristles, which allow for gentle gum massage and teeth cleaning. The harder Brush Tip can be used as a transition to the eventual use of a regular toothbrush. Both tips are perfect for tactile and proprioceptive input to the tongue, cheeks, palate, and lips during oral stimulation and/or dental care. The added vibration can have a soothing and calming effect for individuals with sensory issues. Each tip is constructed of medical grade materials that are FDA compliant and contain no lead, phthalates, PVC, BPA, or latex. Vibe handles sold separately.