The smallest head size in the world & the smallest neck dimension in the world The NSK S-Max pico has been specifically developed for Minimally Invasive (M.I.) procedures. NSK ensures this through wider visibility and more comfortable operation. Its characteristics are, fibre optic, connect direct to sirona, ultra miniature head, stainless steel body, ISB Turbine, cellular glass optics, ceramic bearings, clean head system, push button chuck, single Spray, power: 9W, speed: 380,000~450,000 min-1, Head size: ø8.6 x h9.0mm For short shank burs/ultra short shank burs, Accessory bur set included.