Titanium coating blades of this hand are too fast to rotate the drill soon there will be no coating and it will be sharpened. However it is! If you do not push it in force, sharpness is not bad, coating is also thinning so it is okay to have it! It is! I use it when I want to finish beautifully, but it fulfills my name well. As a hope, I hope the case is like Evalue. If you buy a broken blade with a chima - chima, including this reserve, you should buy this item!