Tongue Training: Tongue tip exercise set can be used to exercise tongue flexibility, which is suitable for slurred speech, stiff tongue, incomplete pronunciation. Tongue Training: Tongue tip exercise set can be used to exercise tongue flexibility, which is suitable for slurred speech, stiff tongue, incomplete pronunciation. Muscle Training: Tongue tip exerciser helps training tongue muscle strength, effectively improve tongue muscle strength and tongue coordination ability. Improve Tongue Flexibility: Mouth tongue tip exerciser tools enable the trainer to master the flexibility and stability of the tongue independently. Round/ Semicircle/C Shaped Tongue Tip Trainer: There are 3 different tongue tip exercisers, with different sized steel balls for training your oral muscle, which is convenient for you to use. Polypropylene Stainless Steel: Oral muscle training tools made of food grade polypropylene, 304 stainless steel, safe and eco friendly, stable and durable, which are easy to clean.