• Box end has built-in 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 • Open end has reinforced teeth to prevent cracking and breaking • Angle rise of 15 degree for box end • Clear engraving- The beautifully-refined engravings are easy to see and increase the efficiency of work. • Compact external diameter is among smallest in the world and ideal for tight spaces • Long pattern 12 point, 17 mm size
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