Features 1.Usage: Tongue tip exercise set can be used to exercise tongue flexibility, which is suitable for slurred speech, stiff tongue, incomplete pronunciation. 2.Muscle Training: Tongue tip exerciser helps training tongue muscle strength, effectively improve tongue muscle strength and tongue coordination ability. 3.Improve Tongue Flexibility: Mouth tongue tip exerciser tools enable the trainer to master the flexibility and stability of the tongue independently. 4.Package Included: There are 3 different tongue tip exercisers, with different sized steel balls for training your oral muscle, which is convenient for you to use. 5.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. Specification Item Type: Tongue Tip Exercise Set Material: Food Grade Polypropylene, 304 Stainless Steel Round Trainer Ball Diameter: Approx. 8mm / 0.31in Semicircle Trainer Ball Diameter: Approx. 10mm / 0.39in C Shaped Trainer Ball Diameter: Approx. 12mm / 0.47in Package List 1 x Round Tongue Tip Trainer 1 x Semicircle Tongue Tip Trainer 1 x C Shaped Tongue Tip Trainer