Thank you for visiting! Easy to remove tartar! Reaches even narrow grooves! I wish I had found this product sooner... Recommended in a set with the oral mirror I have for sale! I will create a special listing for those who want the set. It will be 555 yen. ★★★ If you would like multiple items, such as for your family, please comment. I will create a special listing. (Example) 2-piece set for 555 yen 3-piece set for 850 yen 4-piece set for 1,150 yen ★★★ Daily care is important for preventing periodontal disease, cavities, and bad breath!! Hardened tartar is troublesome... Take care of it daily before it gets to that point! And, I want to reduce the number of times I go to the dentist. (^.^) Make good use of your time at home!!