Heavy-duty, long-reach nut drivers. Ideal for reaching into walls and other hard-to-get-at places where added length is necessary. Hollow shafts facilitate work on stacked circuit boards or other long bolt applications. Smooth Comfordome handles fit the palm of the hand comfortably and are are color-coded for easy identification. Exclusive full-size top with no unfinished seams, no sharp edges to cause fatigue. Chrome-plated shaft helps prevent corrosion. Internal flanges provide solid, twist-resistant shaft anchor. Handles are break resistant, impervious to most acids and alkalis, and are full-fluted for better grip and driving torque. Edges are chamfered for comfort. Meets or exceeds applicable ASME / ANSI specifications.