Size Range : 12-13,5mm / 15/32-17/32"Length Overall : 215mmLenght Blades : 42mmLenght Pilot : 84mmSize of Square : 6,2mmNumber of Blades : 5Weight : 0,130 kgDescription :Right-hand cutting reamer with expanding blades.Parallel shank with square at the back and integral pilot with sliding cone bush at the front of the reamer.Due to the unique Hunger relief grinding operation, the blades have a progressively increasing clearance angle, giving a softer cutting action.Starting with size K12 the adjustment nut is marked with a circular scale. One graduation of the scale corresponds to an alternation of the reamer diameter by 0,01mm.Application :The precision reamer for inline reaming of holes. The cone bush holds the reamer in exact alignment when reaming two holes.Order Information :The reamers are available with standard blades made from high quality special steel to ensure superior cutting efficiency. The reamers are also available with hard chromium coated blades. This finish has superior hardness in combination with a low friction coefficient. This reamers of the "hard chromium" series are particularly suitable for reaming abrasive materials and materials with a tendency to adhere and to build-up the cutting edge.