• N-PowerFit Drive- Increased strength and reduces rounding or fastener damage by distributing stress through a gentle arc in the bore by enlarging the contact surface
• Each end has different curvature signatures for access in multiple areas
• Solid steel construction designed for maximum strength with minimal wall thickness made possible by tough materials, advanced processing technology, and optimal heat treatment
• Approach fasteners from 4 different directions
• S Shape Box End sizes NM12-10, 11, 12, 13, 14, 15, 16, 17, 18, 19