Specifications: Size: 0.79inch / 2cm Material: Lava rock Color: Random delivery Features: It helps the small animal to add more nutritive substances during chewing and make it more robust. Ideal for small pet gnawing pets to keep their teeth clean, healthy and trim, is great for mental stimulation. These different stone made of natural lava stone, the perfect size and shape for critters to chew it safely. Natural grinding stone chinchilla toys effectively help rodents small animals grinding teeth, to prevent the incisors too long to affecting eating, rich in unique high calcium element. Package Included: 1 x 10Pcs Pet Teeth Grinding Stone Notes: 1. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! We strive to offer 5 Star Service in delivery, shipping and after-sales service. If you have any questions, please feel free to contact us. Thank you!