TruNatomy rotating file system is specifically designed to respect the natural anatomy of the root canal system to preserve as much dentin as possible. Files are made of special heat-treated NiTi wire (only 0.8mm in coronal diameter) for flexibility and pre-bendability. Only one cleansing file is needed for most treatments - the TruNatomy cleansing file is available in 3 sizes (Prime, Small, Medium) and “Prime” is the most common. They have off-center cross-section profile, regressive taper, and short 9.5mm handles. Associated Orifice Modifier, Glider, paper tips and Conform-fit gutta-percha are available. 3 available lengths: 21, 25, 31mm. Sterile blister pack, for single use only. TruNatomy Assortment 21mm contains 5 files: 1x Orifice Modifier, 1x Glider, Shaping Files Primary, Small and Medium.