• 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. • Designed for maximum strength with minimal wall thickness made possible by tough materials, advanced processing technology, and optimal heat treatment. • Exceptional surface finish- Proprietary hard chrome plating for anti-wear, anti-corrosion, and superior appearance.Set includes: M5S-0810 8×10mm M5S-1012 10×12mm, M5S-1113 11×13mm, M5S-1214 12×14mm, M5S-1417 14×17mm
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