The MiniLite-Strip Optical Fiber Stripper from IDEAL is a hand-held stripper designed to cut and strip select fiber optic cables. The larger strip hole is to strip the outer jacket from 3 mm. cables. The inner, smaller hole is engineered and precision-ground to remove the buffer coatings, up to 900 microns, to expose the 125 and 140 micron diameter (core + cladding) fibers. The strip notches are preset and locked so no field adjustment is necessary!