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New generation of nickel-titanium K-files that are 36 times more flexible than steel files. They are also made with a variable core geometry in function of their diameter, giving them linear flexibility. This means that: - Flexibility is practically the same across the whole range of files. - Sensitivity remains unchanged. Kerr K3 Nickel-Titanium Files - Pre-bending is impossible. The Batt (inactive) tip also eliminates the risk of opening up false paths and canal deformations - 2 to 3 times superior cutting capacity.