Microconic Cartridge System for CNC Swiss Screw Machines. Swiss style Sub Spindle Pick Off and main spindle collets. Accuracy to .0002”TIR, Standard and OverGrip collets provide better solutions to tolerance problems. Microconic allows for consistent adjustment of gripping force for small and delicate parts. Masa Collets grip parts from .008” to .394”and are available to ship in 1-2 days and can be expedited for same day shipping.