Vibrations-free operation, highest sharpening accuracy ,long life span Features: 1.Adjustable spark protection with large pro Vibrations-free operation, highest sharpening accuracy ,long life spanFeatures:Adjustable spark protection with large protection glassesAdjustable tool testsLaterally closed protections hoodsRobust metal housingModelMQ-250MQ-300MQ-350MQ-400Voltage:(V)380380380380Frequency( ...