System 4 Hex Metric Ball End and Standard Hex Reversible Blades

Drive-Loc VI Features Adjustable/Reversible Locking Blades Selectable Lengths from 1.7" to 4.8" in 1/8" Increments Wiha special chrome-vanadium-molybdenum tool steel
Through hardened for best wear resistance
Wiha ChromTop Finish on tip for a perfect fit every time
Ball End enables fastening and unfastening at an angle of up to 25°
Precision machine chamfered ends
No cut off burrs or impact distortions