Ultra Precision Torque Drive Hand Tapper ~ Tapping range is 1/8-1/2″ & M2-M13. ~ Precision ground work table and spindle for high accuracy. ~ Assures straight perpendicular tapped holes. ~ Rigid structure. ~ High torque tapping head with improved stability. ~ Adjustable clamping range. ~ Includes hook wrench and Allen wrench. ~ Weighs 40 lbs.