ITEM NAME:Dental Finger Ruler 30mm Dentist Instrument Ruler Finger Ring Measuring Tool Descriptio n Specifications: Type: Finger Rules Material: Aluminum alloy Color: Random color Product List: Measuring Scale*1 Performance: Used for root canal measurement, resistant to high temperature and high pressure disinfection at 135 C, clear scale, accurate measurement. We offer you what you need! Dental Clinic Instrument Ring Finger Ruler Equipment Measuring.Type: Finger Rules. We'd like to settle any problem in a friendly manner. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.