ZZ file rotary blue are the type of rotary files that combine between high cutting efficiency and high flexibility. Features: - Standard taper and sizes. - Controlled memory NiTi. - High cutting efficiency. - Inactive tips. - High fatigue resistance flexibility. Specifications: - Size: Assorted ( 2 x #17/08, 2 x #20/04 and 2 x #25/06 ). - Speed : 300~350 rpm. - Color: Blue.