Milwaukee Magnetic Bit Holder 152mm Shockwave Impact Duty 1/4" Hex ShankCustom engineered steel and heat treatment for maximum strength and flexibilityOptimised SHOCK ZONE?äó absorbs up to 3X more torque for more resistance to shock from impactingStrong magnetic tip for secure grip???Ç? Hex reception (DIN 3126 - E 6.3). Very suitable for high torque and impact applicationsTotal Length: 152 mm